Guide to receive-only app on my phone?

Neither of my phones are safe. I have had so many phishing and malware attacks but either all my data was immune to them or there was just nothing to make actual use of without impersonating me.

I will not be safe if my private keys or seed phrase is on my phone. Regardless, what app should I have to check the status of transactions that I have when I make someone pay me in BTC? And what app can easily be used to check the status of transactions I make from a secure device when sending it away? I'm on Android.

I also wanted to ask if anyone has a problem in forcing Sparrow to show them their seed phrase and what type of wallet I should even create (segwit, nested segwit...something else?) and why I shouldn't use 12 words when I'm starting small. 12 words seems to be on the smaller end of what ppl use these days.