iPhone 4S Doesn't Recognise any SIM card

SOLVING THIS PROBLEM:

Go to Settings => General Settings => Reset => Reset Network Settings

It is a known issue when you unplug the battery.

We managed to fix it by turning on airplane mode, re-setting the time manually and then turning the airplane mode off again. This was related to unplugging the battery...

Try a spacer on top of the sim to push it down on to the contacts. Some times (If you remove and install a lot) the contacts can not reach up to touch the Sim.

Set time manually then do network reset! It works

It's probably an issue with the logic board, so you need to replace it, unless you want to try replacing the sim reader yourself, which is very hard.

give me the solution of problem.... my Iphone doesn't detected sim

Changed my logic or mother board on an iphone4...then i restored it but after it starts up and you starting having to follow steps to activate phone it just says searching after a few steps it tries reading the sim card then says cannot find sim...why is that

hello as i tried to set up my iphone 4s i only bypassed the languegeset up and country but when i connected to itune, they requested for a sim card yet it was well placed. i cannot access any other information on the iphone. i had already updated every thing else so how can i fix the sim isue?

+251933204588ps accept

I phone 4s keeps saying insert sim the sim is in the phone how do I sort this problem

iphone 4s show no service problem

Is showing sim not spported

the problem in my case and perhaps many is that the sim tray is badly designed it’s too deep between the sim and connectors so it’s not flush on the connection side, that minute gap stops it being read, the sim has a spacer around it so when its partly inserted gently push down so it drops, you’ll hear a click it’s still in the spacer but with a better connection, it worked then stopped so i opened it half way and pushed again, it’s now fully connected, this is an old question but still needed an answer for my old phone i’d given up on….

my sim card not working in my iphone 4s