this post was submitted on 19 Apr 2024
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Safest way of using WeChat on Android? (lemmy.ca)
submitted 7 months ago by [email protected] to c/[email protected]
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I live in Canada. My girlfriend is Chinese (also living in Canada), and while we are able to communicate via SMS, her mobile carrier isn't the best, and so there have often been issues for us with regular texting. She expressed a strong preference to use WeChat, at least as a backup option for when texting fails us. While I have some pretty significant reservations, it's not the hill I want to die on. So my question is: what can be done to use WeChat without compromising my whole phone? I'm okay with it if our conversations aren't private, but I'd like to know that I'm not giving unfettered access to all of my phone's systems and data to the CCP. What can be done to limit the reach of this ubiquitous app on my device?

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[–] [email protected] 50 points 7 months ago* (last edited 7 months ago) (19 children)

I'm in China and have to use that piece of crap. So here's how I locked it down:

  1. Root your phone with Magisk. There's no way around it.
  2. Install Storage Isolation (https://play.google.com/store/apps/details?id=moe.shizuku.redirectstorage) and deny access to all folders.
  3. Install ApOps (https://play.google.com/store/apps/details?id=rikka.appops) and set pretty much everything to deny or ignore (ignore means the app receives the information "permission granted", but no data is provided, in case some permissions are "mandatory"). If you intend to use wechat to exchange voice messages or make video calls/send photos, the "use microphone" and "use camera" functions would be required. In a similar fashion the location access if you intend to use the location sharing feature.
  4. Be acutely aware that wechat is not encrypting messages, neither end to end nor in the server communicaton. Everything you say can (and probably will) be read and archived. Don't say anything confidential or critical there.

And yeah really, try to convince your ~~wife~~ girlfriend to use signal instead. Or hell, even whatsapp is miles ahead.

My wife is Chinese as well, so even after we leave here she'll be using wechat to stay in touch with family, no way around it, but using messengers more commonplace in other countries is definitely better. Personally I will move wechat to another phone once we're out. For now that's not feasible as it's too much integrated into every function of life here.

[–] [email protected] 2 points 7 months ago (1 children)
  1. Install Shizuku -> Doesn't require root
  2. Install Island and use the built in work profile feature of your android device
  3. Install AppOps and block most of the app with garbage data
  4. Be happy without rooting your phone
[–] [email protected] 1 points 7 months ago

Yeah I've played around with it in the past, but having to re-establish the wireless adb was quite annoying. Plus I need root for AdAway already, I don't think that can be achieved via Shizuku, but that might not apply to the OP. I've tried island back in the beta stage and it wouldn't work on my phone, but I guess things have change since. Might give it another try.

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