"No Service" even without a SIM

Question

iPhone 3GS

처리 속도가 빨라진 iPhone 3G 개선 버전. 이 기기의 수리는 3G와 유사하며 간단한 스크루드라이버, 비집는 도구가 필요합니다. 모델 A1303 / 16GB 또는 32GB 용량 / 검정 또는 흰색 플라스틱 뒷면.

1500 질문 전체 보기

franqus @franqus

평판: 61

3

1

게시일: 2012년 1월 7일

옵션

"No Service" even without a SIM

I bought a 3Gs on the bay, with water damage (in all probability)

already replaced digitizer, LCD, 6R8 coil for backlight…

still have to fix the signal issue but with the last engagement i get an strange error, which doesnt disappear: i don't get the "No SIM" notification anylonger.it shows "Searching..." or "No Signal" all the time, even if there is a SIM inside. The SIM which i use for testing works fine on my other 3Gs and even if there are signal issues/SIMlock it should be recognized. so this was the case before i did the last fix (6r8 coil).

i'm pretty sure this is an hardware issue. maybe on the SIM tray.

any1 ideas?

thx in advance

답변되었습니다! 답변 보기 저도 같은 문제를 겪고 있습니다

좋은 질문 입니까?

예 아니요

점수 4

댓글 2개

how's the dock?

pollytintop 의 2012년 1월 8일

do u mean dock-connector? works fine, i can connect to itunes. already tried to restore the iphone but didnt change the problem.

franqus 의 2012년 1월 8일

댓글 달기

답변 5개

선택된 답변

pollytintop @pollytintop

평판: 77.1k

337

104

145

게시일: 2012년 1월 8일

옵션

2 possibilities...no1 is sim slot, try just giving it a really good clean of the 6 contact pins, make sure the bottom spring on that tray is moving to let the phone know the sim card is inserted.

no.2 damage to the "wing" near connector 7. it's got the antenna wiring so if too much force trying to get board out of frame then this gets damaged.

해당 답변은 도움이 되었습니까?

예 아니요

점수 3

댓글 달기

do u mean dock-connector? works fine, i can connect to itunes. already tried to restore the iphone but didnt change the problem. — franqus

Luis Zarate @luiszarate 평판: 187 3 3 · Answer 1 · 2012-04-02T02:54:57-07:00

Luis Zarate @luiszarate

평판: 187

3

게시일: 2012년 4월 2일

옵션

It may be the battery, old 3gs batteries wont work right on newest iOS .

May try downgrade to iOS 4.1 (this is the only firware than can be downgraded whit a custom firmware) to see if the ICCID error fixes or try whit a newer battery part number like APN 616-0428.

Hope it helps.

Luis

해당 답변은 도움이 되었습니까?

예 아니요

점수 1

댓글 달기

dimichoul @dimichoul 평판: 1 · Answer 2 · 2012-10-14T09:26:30-07:00

i have the same problem but after opening the phone and change the wifi antenna only, so its definately a hardware issue. Everything else is the same so it's not the battery. i have opened/closed the phone many times so i would say its maybe connector 7, i may damaged it and thats will be my next step.

i also noticed that if i close the phone without placing the 7 screws on the motherboard (so the motherboard is not too tied to the back) i may have 1 or 2 bars. in may occasion i have the "searching" up left in the screen but i can send sms and internet browsing but no calls!

hope i helped a bit

altomic @altomic 평판: 22 6 · Answer 3 · 2012-12-09T17:26:33-07:00

altomic @altomic

평판: 22

6

게시일: 2012년 12월 9일

옵션

I had this problem with a 3g. I installed a really old firmware as the new firmware "upgraded" the baseband. this caused problems with the baseband/connectivity for some reason.

I then installed the latest firmware whilst maintaining the older baseband.

though, as i said this was with a 3G and not a 3Gs.

해당 답변은 도움이 되었습니까?

예 아니요

점수 0

댓글 달기