[Samsung Galaxy S10 Questions & Answers] qwerty12:
I have the same exact phone model (signature notwithstanding). I've spent a week looking into getting call recording working. Your thread gives me an excuse to share what I've learnt regarding it on the S10... I don't know anything about the camera situation.

Background: Call recording isn't legal in any European country. (If I'm wrong and there actually is one, or one with certain stipulations like only one party has to know the call is being recorded, Samsung doesn't care: there is no European region for which they will enable call recording.)

The region of the phone is determined by its CSC. Samsung enables/disables certain features according to the CSC in order to comply with the region's laws and regulations.

For MultiCSC firmware, which your phone will almost certainly have, the region is ultimately determined by the country of the SIM card in the phone.

To get call recording to work to varying degrees of success, you can use an app or enable the native call recording in the dialer. There's ways to do both things (with drawbacks) with a rooted phone and one that isn't rooted.

I didn't want to root this phone because of having to manually update the firmware, SafetyNet etc. etc. To save you from a long read, I ended up changing the phone's region to Vietnam (XXV) to use the native call recorder, which works perfectly.

Call recording with a rooted phone

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With an app​

This one's easy. Pretty much any call recording application will work perfectly. I would probably use Axet's Call Recorder - it's free and open source. There's Magisk modules out there that will grant it the required permissions to record calls like a system application.

Enabling Samsung's native call recording in the dialer​

Edit the CSC files directly. There's guides for this on XDA. Essentially you're telling the phone, yes, call recording is allowed in any region. If you happen to use Xposed, the Firefds module can enable call recording without needing to edit files.

Call recording with a non-rooted phone

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With an app​

With Android 11, my experience using a third-party app was spotty. Modern Android versions don't allow user-installed programs direct access to the "call line". The only app I found which mostly worked was Boldbeast Call Recorder. Out of its 12 modes, the only working one on my S10 appears to use the microphones: the caller's voice, while understandable, was quiet. Background noise was present - quite noticeably so.

Cube ACR recorder is also said to "work" too but I never tried it. My assumption would be it has the same limitations as Boldbeast on an unrooted phone.

Enabling Samsung's native call recording in the dialer​

Without root, you can't tell the phone the CSC it's configured for allows call recording, so your only choice is to change the region to one Samsung allows recording in. There's a list here on XDA with CSCs where you can use the call recording feature.

If your phone is still on Android 10, you can change the CSC for free with the Google Dialer app and a code I can't remember. A Google search will reveal many threads with information on that method. (This might factory reset your phone?)

If you're running Android 10(+), you have two choices. These will not trip Knox:

* Flash the Indonesian (XID) firmware. This can be done for free, and without losing your data - just make sure to flash HOME_CSC, and not CSC. Following a tip on XDA, I also took userdata.img out of the AP tarball, but I don't think that's needed. This works because the Indonesian firmware is single-CSC - even if you put a French or whatever SIM card in, there's no other CSC configured for the phone to be able to switch to.

I had working Wi-Fi calling, VoLTE, heart rate measuring in Samsung Health and call recording in the dialer. I did have Samsung Pay too, but that's a misnomer - Samsung Pay in Indonesia is its own local version, with an Indonesian package name. I seriously doubt I'd be able to add my card to it anyway. (Not that I care, I use Google Pay. Samsung Pay does have the advantage of MST, but it was never really all that useful in the UK anyway - I'd have to go back to my childhood to remember a credit card terminal that only accepts magnetic strips.)

I did this at first (can't beat free) but eventually went for the following option because Indonesia is yet to still get the Android 12 upgrade...

* Buy SamKey CodeReader credits. As long as you've got a MultiCSC firmware flashed, you can use SamKey to change your CSC to whatever you want (a link to a list of CSCs with call recording can be found earlier in this post). I went for the Vietnamese CSC, XXV, because it's was the only call recording-supported country where the Android 12 update was released on the same day as it was for France, Australia etc.

With the Vietnamese CSC, heart rate measuring in Samsung Health and call recording in the dialer works. The VoLTE option is present, but I don't know if it actually works. Samsung Pay - the original - can be installed, but I don't know if it works.

However, Wi-Fi calling will not work. Apparently, Wi-Fi calling is forbidden by Vietnamese law. This isn't actually a problem because the Samsung call recorder doesn't work with Wi-Fi calling on anyway.

If Wi-Fi calling is desired, then the Israeli CSC (ILO; Android 12 not released as of this post) might be a good choice, but Samsung Pay cannot be used.