SOLVED: Signal very poor and 3g/ 4g doesn't work in most of time - iPhone SE

Signal very poor and 3g/ 4g doesn't work in most of time

I have bought a second hand Iphone SE 64gb. I verified it in center of my town and it worked without problems. When I arrived at home signal was very poor, no internet connection. Out of town I have same problems. I bought another sim card, another carrier/ same problem.

I checked everything and it's from my hardware. I think that logic board is the problem. Could you give me informations what to change at it? I don't find on internet any informations also I am sure that is not flex cable. I need some informations how to repair/ what to change on logic board. Thanks!!

Answered! View the answer I have this problem too

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@theelitepro_gd really Vinicus, another statement that screams "I don't have any idea of what I'm talking about, I'm just blowing something out my rear".

Aug 31, 2017 by mayer

Posted: Aug 31, 2017

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The likely problem is a lightning dock. After that it would be board level repair. It wouldn't serve you to just get another logic board, as it would be just as costly as a new phone

Parts

iPhone SE (1st Gen) Lightning Connector and Headphone Jack

Labor

iPhone SE Lightning Connector Replacement