{"id":36651,"date":"2021-10-28T08:00:00","date_gmt":"2021-10-28T06:00:00","guid":{"rendered":"https:\/\/www.viafirma.com\/how-to-sign-a-document-on-a-mobile-phone\/"},"modified":"2025-08-13T11:15:22","modified_gmt":"2025-08-13T09:15:22","slug":"how-to-sign-a-document-on-a-mobile-phone","status":"publish","type":"post","link":"https:\/\/www.viafirma.com\/en\/how-to-sign-a-document-on-a-mobile-phone\/","title":{"rendered":"How to sign a document on a mobile phone"},"content":{"rendered":"\r\n<p>Are you tired of physically printing a document, signing it with a pen and scanning it again? It&#8217;s a waste of time, paper and ink. In this article we explain you <strong>how to sign any document written on your mobile<\/strong>, and we tell you how Viafirma&#8217;s business solutions allow you <strong>to optimize and strengthen the security of these processes.<\/strong><\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">How to sign a document on mobile with the Adobe Fill &amp; Sign app<\/h2>\r\n\r\n\r\n\r\n<p>The <strong>Adobe Fill &amp; Sign<\/strong> mobile app is a <strong>simple way to digitally sign<\/strong> any document, although it offers a<strong> very low level of security<\/strong> (not recommended for official documents).<\/p>\r\n\r\n\r\n\r\n<p>Follow the steps described below:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>We install the application on our mobile phone<\/strong> and from the app we open the document.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>In the panel below click on the <strong>Sign<\/strong> icon in the toolbar and select <strong>create signature.<\/strong><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>&nbsp;<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" class=\"wp-image-19300\" style=\"width: -77px; height: -136px;\" title=\"Capture for signing with Fill &amp; Sign\" src=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2021\/10\/Firma-en-Adobe-576x1024.jpg\" alt=\"Capture for signing with Fill &amp; Sign\" \/>\r\n<figcaption class=\"wp-element-caption\">Fill &amp; Sign application signature creation panel image<\/figcaption>\r\n<\/figure>\r\n\r\n\r\n\r\n<p>&nbsp;<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>You will then see a panel where you can <strong>draw your signature in the field.<\/strong> <strong>Check the save to device box<\/strong> so that you can reuse it on other occasions.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-34732 aligncenter\" src=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2021\/10\/rubrica-1024x576-1.webp\" alt=\"\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2021\/10\/rubrica-1024x576-1.webp 1024w, https:\/\/www.viafirma.com\/wp-content\/uploads\/2021\/10\/rubrica-1024x576-1-300x169.webp 300w, https:\/\/www.viafirma.com\/wp-content\/uploads\/2021\/10\/rubrica-1024x576-1-768x432.webp 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/p>\r\n\r\n\r\n\r\n\r\n\r\n<p>&nbsp;<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">How to sign a document on a cell phone without installing anything<\/h2>\r\n\r\n\r\n\r\n<p>Another option is<strong> to sign documents with the iPhone<\/strong> or on any Apple device using iOS&#8217;s own functionality:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>Open the PDF.<\/strong><\/li>\r\n<li>Select the <strong>above marking icon similar to the tip of a pen.<\/strong><\/li>\r\n<li>Once the tools panel opens,<strong> select the + icon<\/strong> and click on <strong>Signature<\/strong>.<\/li>\r\n<li><strong>Draw your rubric<\/strong> or choose a <strong>previously saved one.<\/strong><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\"><\/ul>\r\n\r\n\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\"><\/ul>\r\n\r\n\r\n\r\n<p><!-- \/wp:post-content --><\/p>\r\n<p><!-- wp:paragraph --><\/p>\r\n<p>&nbsp;<\/p>\r\n<p><!-- \/wp:paragraph --><\/p>\r\n<p><!-- wp:image {\"id\":19304,\"width\":1032,\"height\":921,\"sizeSlug\":\"large\",\"linkDestination\":\"none\"} --><\/p>\r\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" class=\"wp-image-19304 aligncenter\" style=\"width: 1032px; height: 921px;\" title=\"Captura de c\u00f3mo firmar un PDF en el m\u00f3vil\" src=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2021\/10\/firmar-con-iPhone-1024x914.jpg\" alt=\"Captura de c\u00f3mo firmar un PDF en el m\u00f3vil\" \/>\r\n<figcaption class=\"wp-element-caption\">IOS signature system image with icons<\/figcaption>\r\n<\/figure>\r\n<p><!-- \/wp:image --><\/p>\r\n<p><!-- wp:paragraph {\"className\":\"highlight\",\"fontSize\":\"medium\"} --><\/p>\r\n<p class=\"highlight has-medium-font-size\">Viafirma has developed <strong>solutions that adapt to all types of devices, operating systems to sign and send to sign PDF<\/strong> and offering<strong> full legal validity<\/strong> in case of repudiation.<\/p>\r\n<p><!-- \/wp:paragraph --><\/p>\r\n<p><!-- wp:heading --><\/p>\r\n<h2 class=\"wp-block-heading\">How to sign a document on a mobile phone in a more secure and 100% legal way<\/h2>\r\n<p><!-- \/wp:heading --><\/p>\r\n<p><!-- wp:paragraph --><\/p>\r\n<p>Both procedures <strong>comply with the established requirements of <a href=\"https:\/\/www.viafirma.com\/en\/digitized-signature\/\">digitalized signature<\/a><\/strong>, which is none other than the typical <strong>signature made with the finger<\/strong> or <strong>that which is written on a piece of paper<\/strong> and then <strong>scanned and embedded in the digital document.<\/strong><\/p>\r\n<p><!-- \/wp:paragraph --><\/p>\r\n<p><!-- wp:paragraph --><\/p>\r\n<p>However, <strong>this mechanism does not gather sufficient <\/strong><strong>evidence to identify the signatory unequivocally<\/strong>, so<strong> its use is not recommended for important procedures<\/strong>, as it is not very secure and is easy to falsify.<\/p>\r\n<p><!-- \/wp:paragraph --><\/p>\r\n<p><!-- wp:paragraph --><\/p>\r\n<p>Here are some more secure mechanisms for signing documents with our solutions:<\/p>\r\n<p><!-- \/wp:paragraph --><\/p>\r\n<p><!-- wp:list --><\/p>\r\n<ul>\r\n<li style=\"list-style-type: none;\">\r\n<ul><!-- wp:list-item -->\r\n<li><strong><a href=\"https:\/\/www.viafirma.com\/en\/digitized-signatures\/\">Biometric signature<\/a>. The best alternative to the digitalized one.<\/strong> It is the handwritten signature made on tablets or cell phones using a precision stylus capable of collecting biometric data.<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<p><!-- \/wp:list-item --><\/p>\r\n<p><!-- \/wp:list --><\/p>\r\n<p><!-- wp:paragraph \/--><\/p>\r\n<p><!-- wp:list --><\/p>\r\n<ul>\r\n<li style=\"list-style-type: none;\">\r\n<ul><!-- wp:list-item -->\r\n<li><a href=\"https:\/\/www.viafirma.com\/en\/otp-sms\/\"><strong>OTP SMS<\/strong><\/a>. Associated with the sending of a code via SMS to the signatory&#8217;s cell phone number, allowing him\/her to sign from anywhere.<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<p><!-- \/wp:list-item --><\/p>\r\n<p><!-- \/wp:list --><\/p>\r\n<p><!-- wp:paragraph \/--><\/p>\r\n<p><!-- wp:list --><\/p>\r\n<ul>\r\n<li style=\"list-style-type: none;\">\r\n<ul><!-- wp:list-item -->\r\n<li><strong>Use a digital certificate.<\/strong> The user must have a certificate issued by a trusted service provider through which the user&#8217;s signature and identity are validated.<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<p><!-- \/wp:list-item --><\/p>\r\n<p><!-- \/wp:list --><\/p>\r\n<p><!-- wp:paragraph \/--><\/p>\r\n<p><!-- wp:list --><\/p>\r\n<ul>\r\n<li style=\"list-style-type: none;\">\r\n<ul><!-- wp:list-item -->\r\n<li><strong>Signature in the cloud<\/strong>. The user will be able to use his certificate hosted in a secure server (HSM), being able to access it from any device every time he wants to sign a document digitally.<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<p><!-- \/wp:list-item --><\/p>\r\n<p><!-- \/wp:list --><\/p>\r\n<p><!-- wp:paragraph --><\/p>\r\n<p>&nbsp;<\/p>\r\n<p><!-- \/wp:paragraph --><\/p>\r\n<p><!-- wp:heading --><\/p>\r\n<h2 class=\"wp-block-heading\">Viafirma, 100% secure and legal solutions to streamline your corporate signature processes<\/h2>\r\n<p><!-- \/wp:heading --><\/p>\r\n<p><!-- wp:paragraph --><\/p>\r\n<p>There is no doubt that the current health crisis has boosted the demand for digital services of any kind. The legal validity of a signature that has been made with the finger is not comparable with<strong> the one that has been made through platforms specially designed for these purposes such as those offered by Viafirma.<\/strong><\/p>\r\n<p><!-- \/wp:paragraph --><\/p>\r\n<p><!-- wp:paragraph --><\/p>\r\n<p>Our tools allow you<strong> to formalize important <a href=\"https:\/\/www.viafirma.com\/en\/electronic-contract\/\">electronic contracts<\/a> remotely with full guarantees from your cell phone, avoiding any unnecessary travel<\/strong> and without the need for an electronic certificate.<\/p>\r\n<p><span style=\"font-weight: 400;\"><div class=\"vf_related_posts_wrapper\"><h2 class=\"vf_related_posts_title\">Related information<\/h2><div class=\"vf_related_posts\"><article class=\"vc_gitem-post-data-source-post\"><a href=\"https:\/\/www.viafirma.com\/en\/types-of-digital-signature\/\" class=\"vc_gitem-post-link\"><div class=\"vc_gitem-post-image\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"512\" src=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2019\/07\/Procedimientos-de-firma-digital-1-768x512.webp\" class=\" wp-post-image\" alt=\"persona apoyada en la pared firmando en una tablet\" srcset=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2019\/07\/Procedimientos-de-firma-digital-1-768x512.webp 768w, https:\/\/www.viafirma.com\/wp-content\/uploads\/2019\/07\/Procedimientos-de-firma-digital-1-300x200.webp 300w, https:\/\/www.viafirma.com\/wp-content\/uploads\/2019\/07\/Procedimientos-de-firma-digital-1.webp 1024w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/div><\/a><div class=\"vc_gitem-post-data\"><h3 class=\"vc_gitem-post-data-source-post_title\"><a href=\"https:\/\/www.viafirma.com\/en\/types-of-digital-signature\/\">Types of digital signature<\/a><\/h3><p class=\"vc_gitem-post-data-source-post_excerpt\">Learn about the different types of digital signature for your business. Start signing documents today for free with Viafirma!<\/p><\/div><\/article><article class=\"vc_gitem-post-data-source-post\"><a href=\"https:\/\/www.viafirma.com\/en\/check-the-signature\/\" class=\"vc_gitem-post-link\"><div class=\"vc_gitem-post-image\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"512\" src=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2021\/02\/\u00bfComo-puedo-saber-si-un-documento-esta-firmado-electronicamente-768x512.webp\" class=\" wp-post-image\" alt=\"como-puedo-saber-si-un-documento-esta-firmado-electronicamente\" srcset=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2021\/02\/\u00bfComo-puedo-saber-si-un-documento-esta-firmado-electronicamente-768x512.webp 768w, https:\/\/www.viafirma.com\/wp-content\/uploads\/2021\/02\/\u00bfComo-puedo-saber-si-un-documento-esta-firmado-electronicamente-300x200.webp 300w, https:\/\/www.viafirma.com\/wp-content\/uploads\/2021\/02\/\u00bfComo-puedo-saber-si-un-documento-esta-firmado-electronicamente.webp 1024w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/div><\/a><div class=\"vc_gitem-post-data\"><h3 class=\"vc_gitem-post-data-source-post_title\"><a href=\"https:\/\/www.viafirma.com\/en\/check-the-signature\/\">How do I know if a document is electronically signed?<\/a><\/h3><p class=\"vc_gitem-post-data-source-post_excerpt\">To find out if a document is electronically signed, just open it in Adobe and examine it - here&#039;s how...<\/p><\/div><\/article><article class=\"vc_gitem-post-data-source-post\"><a href=\"https:\/\/www.viafirma.com\/en\/sign-whatsapp\/\" class=\"vc_gitem-post-link\"><div class=\"vc_gitem-post-image\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"475\" src=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2023\/11\/blog_whatsapp-768x475.webp\" class=\" wp-post-image\" alt=\"solicitud whatsApp\" srcset=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2023\/11\/blog_whatsapp-768x475.webp 768w, https:\/\/www.viafirma.com\/wp-content\/uploads\/2023\/11\/blog_whatsapp-300x186.webp 300w, https:\/\/www.viafirma.com\/wp-content\/uploads\/2023\/11\/blog_whatsapp-1024x634.webp 1024w, https:\/\/www.viafirma.com\/wp-content\/uploads\/2023\/11\/blog_whatsapp.jpg 1228w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/div><\/a><div class=\"vc_gitem-post-data\"><h3 class=\"vc_gitem-post-data-source-post_title\"><a href=\"https:\/\/www.viafirma.com\/en\/sign-whatsapp\/\">Send your electronic signature requests by WhatsApp with Viafirma<\/a><\/h3><p class=\"vc_gitem-post-data-source-post_excerpt\">Discover a new way to manage your electronic signature processes<\/p><\/div><\/article><\/div><\/div><\/span><\/p>\r\n<p><!-- \/wp:paragraph --><\/p>\r\n<p><!-- wp:block {\"ref\":19147} \/--><\/p>","protected":false},"excerpt":{"rendered":"Are you wondering how to sign a pdf on your mobile? We explain the steps to follow and how Viafirma's business solutions allow you to optimize and strengthen the security of your signature processes....","protected":false},"author":1,"featured_media":28119,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[44],"class_list":["post-36651","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-resources-blog-en"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.viafirma.com\/en\/wp-json\/wp\/v2\/posts\/36651","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.viafirma.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.viafirma.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.viafirma.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.viafirma.com\/en\/wp-json\/wp\/v2\/comments?post=36651"}],"version-history":[{"count":0,"href":"https:\/\/www.viafirma.com\/en\/wp-json\/wp\/v2\/posts\/36651\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.viafirma.com\/en\/wp-json\/wp\/v2\/media\/28119"}],"wp:attachment":[{"href":"https:\/\/www.viafirma.com\/en\/wp-json\/wp\/v2\/media?parent=36651"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.viafirma.com\/en\/wp-json\/wp\/v2\/categories?post=36651"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}