Graphene and Lineage are the most uncomparable custom roms. Have and look at security and privacy and the type of Google Play handling.

See https://eylenburg.github.io/android_comparison.htm to geht a first idea

There are only a few to consider. /e/os if you want it easy or DivestOS if you want it most secure and private. All the other possibilities have disadvantages compared to these.

Please be aware that you should buy FP5 as FP4 has huge hardware issues and the support is a dissapointment. And yes, /e/ is available for FP5 (but not via easy installer, but it’s not hard to flash it yourself)

/e/ is announced as ‘degoogled’ but that’s not 100 % true (and not nearly as well). For example MicroG connects to Google as well as connectivity backup check. Patch level is far behind AOSP. The App Lounge uses clean APK for some apps which is very risky. Communication is a problem and they do not react like they should for example when Mike Kuketz analysed /e/ and found several problems.

The community is huge and they support many devices.

DivestOS is better in most points but is managed by one person alone. MicroG is not included by default (if you need it) and multi sim support is a problem.

Lineage supports the phone not the phone Lineage. Okay, not the important thing.

What is cheap? For me, the Fairphone is the cheapest because the /e/OS support is announced at least for five year (FP 5: 8 years). So the device is not the cheapest but buying a new one whenever firmware updates run out is more expensive.

Why were you under that impression? No default encryption, no group chat encryption. Data on the servers, meta data, company resides in UAE and many more. Wenn don’t know what’s und er the hood of WhatsApp but what de know about Telegram is nauseatic

Yes, it is. You should not recommend such a phone. And this only in terms oft update.

The arguments against the company behind this phone would Film books, but that’s another point