{"action":"created","issue":{"url":"https://api.github.com/repos/spesmilo/electrum/issues/2058","repository_url":"https://api.github.com/repos/spesmilo/electrum","labels_url":"https://api.github.com/repos/spesmilo/electrum/issues/2058/labels{/name}","comments_url":"https://api.github.com/repos/spesmilo/electrum/issues/2058/comments","events_url":"https://api.github.com/repos/spesmilo/electrum/issues/2058/events","html_url":"https://github.com/spesmilo/electrum/issues/2058","id":191894232,"number":2058,"title":"Android: please confirm required Android version 2.3 - other requirements?","user":{"login":"JazzTp","id":8016573,"avatar_url":"https://avatars.githubusercontent.com/u/8016573?v=3","gravatar_id":"","url":"https://api.github.com/users/JazzTp","html_url":"https://github.com/JazzTp","followers_url":"https://api.github.com/users/JazzTp/followers","following_url":"https://api.github.com/users/JazzTp/following{/other_user}","gists_url":"https://api.github.com/users/JazzTp/gists{/gist_id}","starred_url":"https://api.github.com/users/JazzTp/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/JazzTp/subscriptions","organizations_url":"https://api.github.com/users/JazzTp/orgs","repos_url":"https://api.github.com/users/JazzTp/repos","events_url":"https://api.github.com/users/JazzTp/events{/privacy}","received_events_url":"https://api.github.com/users/JazzTp/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":5,"created_at":"2016-11-27T23:35:26Z","updated_at":"2017-02-04T13:14:08Z","closed_at":null,"body":"At the moment, **\"Requires Android 2.3 and up\"** appears towards the bottom of this page:\r\nhttps://play.google.com/store/apps/details?id=org.electrum.electrum\r\n\r\n**Is that indication outdated or are there any other requirements?**\r\n\r\n------\r\n\r\n**Details:**\r\n\r\nI have recently installed Electrum **on my Android Lollipop 5.0.2 phone, the installation was straightforward**.\r\n\r\nI'd like to also use **my older phone, an LG P500, as cold storage**, keeping it permanently _offline_, to sign transactions communicating screen-to-camera with the watch-only instance of Electrum on the other phone.\r\n\r\nMy older phone had Android 2.2 on it, so I've \"rooted\" it, I've been flashing alternative ROMs into it and I've been trying to install Electrum on Android versions 2.3.7, 4.0.4 and 4.1.2 with no success.\r\n\r\n\r\n**Google Play** says \"not compatible with your device\" or Electrum doesn't even appear in the findings. Instead, I was always seeing a lot of other wallets and, just to test if the phone was OK, or more or less likely to be, I tried with Mycelium (which was also compatible with Android 2.2) and it could be installed with no problems and seems to be working (I also installed a few other apps with no problems, including downloads of greater size than Electrum). **I'd really like to have Electrum, though.**\r\n\r\n\r\nI also tried installing **directly from APKs** Electrum and a few other apps.\r\n\r\nAt first, I don't know how, I had failed to see the downloadable APK on electrum.org.\r\nSo, I had extracted it from my Lollipop phone, together with the APKs of a few other apps.\r\nWith these APKs, I could again install the other apps (including some of greater size) but not Electrum, during about 6-7 seconds the screen showed \"Installing...\" but then I got **\"Application not installed\"** with no other error message.\r\nI've checked with the `diff` command on this Linux box, the APK downloaded from electrum.org is apparently an identical file as the same APK I extracted from my Lollipop phone where the installation was straightforward. \r\nBut if I double click on the APK with a file manager (Nautilus) on this Linux box, it opens like a zip file... who knows, maybe there's something (permissions?) that `diff` doesn't check, so I retried with **the APK downloaded from electrum.org** and it **could be installed on all these three Android versions, 2.3.7, 4.0.4 and 4.1.2** (2.3.7 and 4.1.2 also tested after flashing again without installing gapps, while this ROM with 4.0.4 already comes with them).\r\n\r\n**But apparently it won't run.** At startup I get a black screen (during almost 1 minute the first time, a fraction of a second afterwards) and then \"Unfortunately, Electrum has stopped\". The same happens in all three Android versions, 2.3.7, 4.0.4 and 4.1.2 (even with no other apps installed for maximum available space, and despite moving Electrum to SDcard or internal storage).\r\n\r\nI guess I might simply have to buy another phone, to use as cold storage. However, I'm not already closing this issue myself because the developer might find it useful/interesting... I'm thinking about compatibility and how it could affect the diffusion of the app, although I don't think many are still willing to use a phone with the hardware resources of an Android 2.2 one... except maybe as cold storage ;)"},"comment":{"url":"https://api.github.com/repos/spesmilo/electrum/issues/comments/277445134","html_url":"https://github.com/spesmilo/electrum/issues/2058#issuecomment-277445134","issue_url":"https://api.github.com/repos/spesmilo/electrum/issues/2058","id":277445134,"user":{"login":"JazzTp","id":8016573,"avatar_url":"https://avatars.githubusercontent.com/u/8016573?v=3","gravatar_id":"","url":"https://api.github.com/users/JazzTp","html_url":"https://github.com/JazzTp","followers_url":"https://api.github.com/users/JazzTp/followers","following_url":"https://api.github.com/users/JazzTp/following{/other_user}","gists_url":"https://api.github.com/users/JazzTp/gists{/gist_id}","starred_url":"https://api.github.com/users/JazzTp/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/JazzTp/subscriptions","organizations_url":"https://api.github.com/users/JazzTp/orgs","repos_url":"https://api.github.com/users/JazzTp/repos","events_url":"https://api.github.com/users/JazzTp/events{/privacy}","received_events_url":"https://api.github.com/users/JazzTp/received_events","type":"User","site_admin":false},"created_at":"2017-02-04T13:14:08Z","updated_at":"2017-02-04T13:14:08Z","body":"I bought a laptop instead (if you do, be sure to disable ethernet and wifi and GMS if it has it, and eventually pull out the radio module(s) or simply disconnect their power line, and _also_ leave AMT OFF and put a strong password on the BIOS settings).\r\n\r\nI've been warned by a friend that any GSM chip might have a back door. I didn't completely rule out using a smart phone as cold storage, but I'd rather put small amounts of coins on that wallet and for a short period of time."}}
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