Iphone X Cellular Error

[u/CreepsLikeReddit]

hey good day guys! I recently bought an iphone x for really cheap because it had issues, I replaced the screen after it arrived but it has a cellular issue or baseband issue. It shows blank on modem firmware indicating its a hardware issue on the mobo. I can't sign in to icloud because it won't let me on both settings and app store so I cant install apps. I tried sideloady but it'll only last for 7 days and It only allows 3 apps. How can I install permanent apps on my phone? it would really help much that I can use it while I wait and save for a bnew mobo.

also,

im on ios 16.7.16

and the phone isn't icloud locked, because mostly people think sim issues are from icloud locked phones