I mean what do expect of samsung galaxy a11 phone after all ? its just using Qualcomm SDM450 Snapdragon 450 and its old enough to lagging, but after all i suggest you to use SD Maid app, to clear cashe the phone and its so easy to use and have lots of features to use! and if you can download the pro version of it , its so much useful than the free version. if you lagging or have problem with it after clearing the cashe and do what i said to do, you can get backup of your phone and factory reset it and use it again like new :) Hope this helps

It depends on what kind of dirty is it but if its normal dirties for using long time of phone just use a dry toothbrush that you are not using it anymore and clean it, dont use water or something liquid to do that

first of all check your charging adapter and cable the best way is just charge another phone with it (charge it about 15 30 min) if its charged ! well then fine its not your adapter the second thing that is maybe its not about your charging port maybe the problem is battery that is dead ! galaxy s9 support wireless charging if you have that charger you can test with that if its not worked the problem is battery but if its worked and charged the phone the charging port you changed maybe broke or not a original and it made of china or something like that because they are cheaper than the original and they destroy after a while sometimes they are not working too. after all if you sure about your battery and dont have wireless charger to charge it then you need to change your port again, (if you change the port by own skill take it to repairers to check it out, if your not well then change that place that you replace your port and show it to someone else) hope this helps

I have this problem and after looking for awnsers i cant find something that repairs this problem and i changed some network ic (i dont know what they call it) and my problem solved but before doing that restart your phone and check. Remove and reinsert the SIM card and check. Switch between different network modes and control. Check with any other SIM card working, and that your SIM card or your network operator may be having problems and after that you need to bring your phone to repairers to check.

hey, it depends to your windows version, actually in lower version of windows like 7 some drivers like wifi and hotspot is not install and then we have the same as your problem to solve that you need to download your wifi driver its easy to find just search model of your computer and type wireless driver at the end, if your looking for easy way or cant find the driver you can install some apps to find it like IObit.Driver.Booster or driver talent and after that you can install them, if your computer doesnt works after this process again maybe its hardware problem you need to change your wifi card in your computer