{"id":2351,"date":"2019-08-14T10:11:21","date_gmt":"2019-08-14T08:11:21","guid":{"rendered":"http:\/\/www.dotmana.com\/weblog\/?p=2351"},"modified":"2019-08-15T14:38:11","modified_gmt":"2019-08-15T12:38:11","slug":"dual-sim-micro-sd-hack","status":"publish","type":"post","link":"http:\/\/www.dotmana.com\/weblog\/2019\/08\/dual-sim-micro-sd-hack\/","title":{"rendered":"Dual SIM + micro-SD Hack"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Dual SIM smartphones are now common.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">But most of them due to the card tray design, can either accept:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>two SIM but no micro-SD<\/li><li>one SIM and a micro-SD card<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This is definitely a bugger since mid-range Android smartphones are pretty  stingy with storage memory (from 16Gb to 32Gb), while micro SD are pretty cheap an wayyyyy larger (128Gb to 512Gb)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here is the quick hack to insert both dual sim, and a micro SD.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tools needed<\/p>\n\n\n\n<ul class=\"wp-block-gallery columns-2 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-094113-1024x1024.jpg\" alt=\"\" data-id=\"2353\" class=\"wp-image-2353\" srcset=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-094113-1024x1024.jpg 1024w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-094113-150x150.jpg 150w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-094113-300x300.jpg 300w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-094113-768x768.jpg 768w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-094113-144x144.jpg 144w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Tools needed, but a lighter and utility knife would do<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-101315-1024x1024.jpg\" alt=\"\" data-id=\"2363\" data-link=\"http:\/\/www.dotmana.com\/weblog\/2019\/08\/dual-sim-micro-sd-hack\/p90814-101315\/\" class=\"wp-image-2363\" srcset=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-101315-1024x1024.jpg 1024w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-101315-150x150.jpg 150w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-101315-300x300.jpg 300w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-101315-768x768.jpg 768w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-101315-144x144.jpg 144w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Wow, 400Gb<\/figcaption><\/figure><\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Peel the back of the nano-SIM plastic, with a hot air gun, as it&#8217;s soften the back glue, heat gently and evenly the back, to not fry the sim. (you may want to try first with a discarded SIM card, sitting in your junk-box)<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092749-1024x1024.jpg\" alt=\"\" class=\"wp-image-2354\" srcset=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092749-1024x1024.jpg 1024w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092749-150x150.jpg 150w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092749-300x300.jpg 300w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092749-768x768.jpg 768w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092749-144x144.jpg 144w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Peeling the plastic card of the PCB\/Chip<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Clip about 1mm the sides of the FR4 epoxy SIM card<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092827-1024x1024.jpg\" alt=\"\" class=\"wp-image-2355\" srcset=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092827-1024x1024.jpg 1024w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092827-150x150.jpg 150w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092827-300x300.jpg 300w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092827-768x768.jpg 768w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092827-144x144.jpg 144w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Clipping the SIM PCB with scissors<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">File the edge on the micro SD card, so it&#8217;s thinner, and don&#8217;t have this edge protruding anymore and shaves few microns of the card.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It&#8217;s interesting the flipchip design, reflown or wire bonded on a thin PCB with the finger contacts, then overmolded with the final plastic case. 400Gb are store in this die, that&#8217;s awesome, I guess, the controller must be integrated too, not separated as in Bunnie&#8217;s entry: <a href=\"https:\/\/www.bunniestudios.com\/blog\/?page_id=1022\">https:\/\/www.bunniestudios.com\/blog\/?page_id=1022<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I don&#8217;t know if one can reflow this design as experimented here: <a href=\"http:\/\/www.dotmana.com\/weblog\/2015\/08\/microsd-card-reflow-quick-and-dirty-pcb-with-kicad\/\">http:\/\/www.dotmana.com\/weblog\/2015\/08\/microsd-card-reflow-quick-and-dirty-pcb-with-kicad\/<\/a><\/p>\n\n\n\n<ul class=\"wp-block-gallery columns-2 is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092547-1024x1024.jpg\" alt=\"\" data-id=\"2356\" class=\"wp-image-2356\" srcset=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092547-1024x1024.jpg 1024w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092547-150x150.jpg 150w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092547-300x300.jpg 300w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092547-768x768.jpg 768w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092547-144x144.jpg 144w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>micro SD card on file<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092612-1024x1024.jpg\" alt=\"\" data-id=\"2357\" data-link=\"http:\/\/www.dotmana.com\/weblog\/?attachment_id=2357\" class=\"wp-image-2357\" srcset=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092612-1024x1024.jpg 1024w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092612-150x150.jpg 150w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092612-300x300.jpg 300w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092612-768x768.jpg 768w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-092612-144x144.jpg 144w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Filed top micro SD, luckily, there is no SMD caps hidden in this notch<\/figcaption><\/figure><\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tape one side of the smartphone card tray, with the first sim card and the micro-SD<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"758\" src=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-093246-1024x758.jpg\" alt=\"\" class=\"wp-image-2358\" srcset=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-093246-1024x758.jpg 1024w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-093246-300x222.jpg 300w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-093246-768x569.jpg 768w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-093246-405x300.jpg 405w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Front of the card tray (yes, the first nano SIM was already homemade, from regular SIM, to micro, then nano, went under the knife quite few times)<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Tape the other side with the shrinked second SIM<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"> (take extra care where the chip should align, here I made scratches with the scalpel with the unmodified nano sim where it should go)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here I used Kapton tape, but I guess any office tape would do<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-093517-1024x1024.jpg\" alt=\"\" class=\"wp-image-2359\" srcset=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-093517-1024x1024.jpg 1024w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-093517-150x150.jpg 150w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-093517-300x300.jpg 300w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-093517-768x768.jpg 768w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/P90814-093517-144x144.jpg 144w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Back of the smartphone card tray, with tape holding the secondary SIM<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">That&#8217;s it! Dual sim and lot of storage! 400Gb, gosh!<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"576\" height=\"1024\" src=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/S90814-094010-576x1024.jpg\" alt=\"\" class=\"wp-image-2360\" srcset=\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/S90814-094010-576x1024.jpg 576w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/S90814-094010-169x300.jpg 169w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/S90814-094010-768x1365.jpg 768w, http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/S90814-094010.jpg 1080w\" sizes=\"auto, (max-width: 576px) 100vw, 576px\" \/><figcaption>SYMA is my secondary wireless provider, and F SFR my first<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Dual SIM smartphones are now common. But most of them due to the card tray design, can either accept: two SIM but no micro-SD one SIM and a micro-SD card This is definitely a bugger since mid-range Android smartphones are &hellip; <a href=\"http:\/\/www.dotmana.com\/weblog\/2019\/08\/dual-sim-micro-sd-hack\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":2359,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-2351","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ubuntu"],"_links":{"self":[{"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/posts\/2351","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/comments?post=2351"}],"version-history":[{"count":13,"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/posts\/2351\/revisions"}],"predecessor-version":[{"id":2379,"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/posts\/2351\/revisions\/2379"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/media\/2359"}],"wp:attachment":[{"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/media?parent=2351"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/categories?post=2351"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/tags?post=2351"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}