Chosen Solution

After a replacement of the lcd and digitizer my iPhone always search for service. Even if my Sim card isnt in. I tried the date solution. I tried the restore solution. My blue thing is still here and in good condition. I tried to switch the antenna and speaker enclosure. All cable is right at their place. I dont know what to do more :( Please help me.

I would replace the antenna…. replacement is usually the best way to rule out a number of things and ease stress and frustration… if that doesnt work it could be either: a defective sim card phone settings