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I would like to install TextSecure on an Android tablet. TextSecure is not currently supported for tablets, and Google Play Store refuses to install it.

How can I tweak the (build.prop?) settings to make Play Store perform the install? I guess I have to make the Play Store believe my tablet is a phone. I know that TextSecure may not work after the install, but I do want to try.

  • You can try to find the APK file for TextSecure and manually install it (there's no check on app installation) – Andrew T. Oct 15 '15 at 6:17
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It seems possible if you have (another) phone number

According to Wikipedia on Signal (the new name: "In November 2015, the TextSecure and RedPhone applications on Android were merged to become Signal for Android."):

Signal requires that the user has a phone number for verification. The number does not have to be the same as on the device's SIM card [...]. A number can only be registered to one device at a time.

How to register

Basically the FAQ states you can register with a different number:

Request a call for the verification number after the two minute timeout.

(Which phone number is shown as sender is also explained in the FAQ.)

How to build from source (& install)

According to an old issue on their site, it was only three commands build and install from source:

git pull 
ant release 
adb install -r bin/TextSecure-release.apk

How to download APK (& install) - this maybe risky(!!)

According to this Github-issue:

multi-device support is on the roadmap

But in the meantime, one can try downloading the APK from other websites, e.g. (same issue):

You can try sideloading the app via https://apps.evozi.com/apk-downloader/.

This is a user response, I do not know if/how trustworthy this site is!!! But, based on the present Playstore-link for Signal that link would be: https://apps.evozi.com/apk-downloader/?id=org.thoughtcrime.securesms .

Why no APK-download or ...store

I do not know, why Signal does not allow installing to a device without SIM (yet), and they may (see quote above). I do know, why they did (do?) not distribute their APK-s for 'wild' installation, see this issue:

  1. No upgrade channel for effective security
  2. No app scanning (possible malware problems)
  3. No crash reporting
  4. No stats to prioritize development and platforms
  5. Not a privacy win
  6. To not encourage "allow 3rd party APK-s" by 'naive users'
  7. It is still possible to install by building from source for 'power users' (only)

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