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?
I’m in China and have to use that piece of crap. So here’s how I locked it down:
- Root your phone with Magisk. There’s no way around it.
- Install Storage Isolation (https://play.google.com/store/apps/details?id=moe.shizuku.redirectstorage) and deny access to all folders.
- 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.
- 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
wifegirlfriend 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.
+1 for signal but i doubt whatsapp is ahead at all
Whatsapp uses end to end encryption and is far from as intrusive as wechat.
whatsapp is certainly backdoored, its closed source and unverifiable.
then so does your claim, unverifiable
my claim is completely open, unlike whatsapp
At least Whaysapp have the content encrypted
its certainly backdoored
Don’t forget that AppOps is not really standardized, and even the app admits that some phone’s system does not implement a restriction properly (or at all).
That being said, it’s very good to have, but you have to keep this in mind.
AFAIK lineage os has a more complete implementation.
Can it be used without a smartphone, like in an Android VM?
Yeah I was considering Waydroid but then I lose the ability to connect outside of my PC
I guess it could be, but that kills the use case of being contactable by his GF on the fly.
To answer the question: GrapheneOS and a separate profile would be the safest but still…
If you are both outside of china there really is zero reason (other than preference) to use that piece of spyware.
To answer the question: GrapheneOS and a separate profile would be the safest
I appreciate the suggestion, but maybe I should add that I’d like to not have to change up my phone too much. It’s a Fairphone 4 running the OEM Android and my preference would be to keep it that way. Are separate profiles like that a thing on stock Android?
If you are both outside of china there really is zero reason (other than preference) to use that piece of spyware.
She travels back to China sometimes, uses it to contact friends and family back home, and uses it to chat with lots of mainlanders here in Canada. For her it’s not weird at all.
In fact, she expressed to me that she’s perfectly comfortable with the fact that they use WeChat combined facial recognition technology in China for payment processing. When you get on public transit, you can have them scan your face and it will automatically charge you the bus fare. It really skeeves me out, but it’s simply not the hill I want to die on in this relationship. I’m crazy about her in so many ways, it’s okay with me if we don’t see eye-to-eye on digital privacy.
If you’re in the US and mostly worried about one app, you can probably devote a Work folder via an app like Shelter to a GF.
I’m not in the US, but what is this Shelter you speak of?
https://f-droid.org/packages/net.typeblog.shelter/
Shelter is an app that takes advantage of the work profile in android to install apps in that profile and makes shortcuts for the app in the normal profile. So it feels like you’re just using an app as usual but the app is pretty much sandboxed away from all your info.
Thank you! This is exactly the sort of thing I was looking for!
Not OP, but is this any better than the Island app? I’ve been using that for a long time and it seems to use the same android feature.
Android 15 solves your issues -
https://www.androidauthority.com/android-15-private-space-hands-on-3432113/
Private Spaces when they come to Fairphone will be perfect for this.
You could sandbox it into a work profile that doesn’t have access to your main profile. Storage is completely segregated, and the work profile can be easily disabled when you’re not using it.
The best solution is obviously to choose another platform and convince your girlfriend to use that, explaining how this little extra effort on her part to use another app goes a long way with you in terms of appreciation and understanding of a partner’s boundaries and comfort zone.
Shelter is an android app that helps making sandboxed apps
Yeah this is what I use to create and manage a work profile on my device to keep my personal and work data/apps separate.
FWIW, WeChat and 微信 are different apps. With a non-Chinese phone number and Google Play Store download, you’ll be using the international one (WeChat) instead of the Chinese one (微信). There are still privacy concerns, but it’ll be less invasive than what you’d have with the version that people in China are buying their groceries with and stuff.
I’m sorry I don’t have advice for how to actually protect yourself, though… I’ll be keeping an eye on this thread to see what I can learn.
Ah, that’s interesting and makes sense. So I guess your best option (if you must use WeChat) is to use the international version of the app with as many permissions disabled as possible.
Or maybe look at the Matrix WeChat bridge? https://matrix.org/ecosystem/bridges/wechat/
I’ve heard of matrix bridges before but I’m unfamiliar with how to actually set them up and use them. I understand the basic idea is that they relay messages out of matrix and into some other messaging service, but I don’t understand how to actually enact that onto the element client on my phone. Matrix is so complicated 😅
I’ll level with you… I’ve never used Matrix either. 🤣 But all the cool kids around these parts recommend it, and I fundamentally agree with the cause of the project and saw they had the WeChat bridge, so thought I’d mention it.
That’s a great point, thanks! I will definitely be using the international one. I expect since I’m getting it through Google Play it’ll be constrained based on the OS permissions I give it. And I don’t intend to give it any permissions
I expect since I’m getting it through Google Play it’ll be constrained based on the OS permissions I give it
Getting it through google play or not does not constrain anything more or less.
And I don’t intend to give it any permissions
Hopefully it won’t require any to be able to keep using it
Maybe get a girlfriend that isn’t a brain washed spy? \s
Just use a different app then? You don’t need to come up with some high tech solution. She won’t use that anyway. But something simple like signal should be sufficient.
Maybe get a girlfriend that isn’t a brain washed spy? \s
Listen here, I like my qt tankie sleeper cell gf. As long as she doesn’t hear anyone say the activation phrase, she’s very sweet.
For real though, this app is pretty culturally ingrained over there and so I don’t really have the option of pushing something else (we all know how real messaging app fatigue has gotten these days). Especially when other apps will be restricted whenever she travels home, and we want something that can serve as a backup when other communication methods aren’t an option. I’m pretty sure WeChat will work through The Great Firewall, so it’s ideal for our purposes. I have no idea if the same can be said for WhatsApp or Signal.
If you love her (and it seems like you do) talk to her openly about your concerns and suggest something else. Heck, even set up a Matrix user for each and tell her you want to use that exclusively for both of you as a romantic gesture. That’s how I got my wife on Matrix (Element).
Why don’t you use a better messaging app? If not matrix, then signal? Even telegram is better compared to both wechat and sms.
She’s not very tech savvy at all. It would be asking a lot. I’d rather stick to something she is comfortable with.
One does not need to be tech savvy for that. All 3 are not like a terminal controlled operating system, but a normal messaging app. But if you are ok with giving up privacy, I shouldn’t tell you what to do instead.
I stopped using every messenger besides signal and Matrix. Even my not tech savy parents are using signal now - its in my opinion the better solution to stand your ground and may push others into using the better apps
Weird perspective for someone using Google services lmao.
If you are serious with this relationship (or you expect to still have Chinese partners in the future), I strongly recommend you buy a separate device for all the Chinese spywares required to maintain communication with your partner(s). At some point you will have to enter China, and it is best that you take only this device with you into it then.
I’ll cross that bridge when I get to it. If I’m going to do that I might as well buy the burner phone once I’m actually in China rather than preemptively get one now. I like her a lot but I’d say we’re at least a year away from going to China together.
The good thing about getting one from the start is that you can set it up to your liking from the get-go and won’t have to do it later. You’ll also get used to using it daily and see how managing two devices works for you.
If you really want to isolate it, grapheneOS lets you put it in its own profile almost totally isolated from anything in any other profile.
But you probably don’t want to buy a g! Pixel.
You could buy a separate phone and only run that app on it. Hassle but it would be secure.
Just tell her there’s email. If she insists on WeChat… Maybe she’s… err…
I mean, a messaging app isn’t suited for a back up. Just throw her phone into the toilet, and many such apps are gone forever.
Probably an iPhone user.
Or otherwise concerned about using an app banned by the state.
banned by the state
Forgot that part… It’s crazy that a bunch of lizard brains ruling an idiotic party can literally dictate people’s life.
Yeah she’s an iPhone user. And she wants to use WeChat because it’s like second nature to Chinese people. It’s as normal to them as email is to us in the west. They are totally desensitized to the digital privacy concerns.
She has WhatsApp as well, but it’s not set up properly on her phone so she doesn’t get notifications for it. Plus I’m pretty sure it wouldn’t work if she traveled back to China.
Brace yourself for a weird recommendation:
Don’t worry about it or switch to ios.
You’re on a different marketplace for phone apps than chinese nationals so you’re not getting the same wechat as they are. If you trust your platforms marketplace and your phones security and privacy tools then just don’t worry about it and use them like a normal person.
If you don’t trust your platforms marketplace or security and privacy tools, switch platforms.
It doesn’t seem from your responses in this thread that you’re in a good spot right now to learn everything required to root and run an alternative os securely and act as your own security auditor. Not a value judgement, I’m not in a position to act as my own diesel mechanic. That’s why I said maybe switch to ios if you feel exposed by stock android instead of saying you ought to try to navigate the alternate os/custom rom world.
It might seem like some people in the replies have given good walkthroughs, and they definitely have, but at some point you’re gonna have to make a decision about something that either isn’t documented on a wiki or no one responds to questions about.
Maybe the best choice is to either not worry about it or switch platforms and no matter what you choose, put the phones security and privacy tools to use and be more considered and self aware about how you use your phone.
E: Jesus Christ. Some of the responses you’ve gotten are astonishing. Maybe ask in hexbear or something just to get an alternative view.
Yeah I ended up installing it in an Android work profile using Shelter, and it is a disaster of an app. I expected a lot more of a professional looking app given how popular the WeChat service is and how big of a company Tencent is, but it’s like a shittier WhatsApp. It’s not even localized properly, a bunch of strings in the app (like error screens and stuff) are in Chinese, and the English is poorly translated. The mechanism to reply to someone’s message is unclear (it’s not just long pressing or dragging on a message like in other apps), and you can’t send a reaction emoji to a message.
It’s always funny to me how people assume the most half-assed software the world has ever seen somehow carries incredibly advanced and impossible to detect tracking deep inside it.
Like we have t-1000 at home! T-1000 at home: that bucket robot that got murdered in Philly.
I just saw you’re from .ca, you may have to make an alt to ask but 100% ask on hexbear. There’s people on there who have dealt with wechat and phones going to and from china and won’t be near as overtly weird and racist as some of the responses here. Maybe differently overtly weird.
use https://f-droid.org/packages/com.oasisfeng.island.fdroid/ (work profile) to isolate. and use a pay as you go number to register (rather than you commonly used one). do not grant any permission. set background restriction to strict. force stop it after every use. i think that would be enough