Why does my iPhone keep searching service even if no sim inserted

Question

iPhone 7 Plus

2016年9月16日に発売。モデル番号は1778,1784。 GSM かCDMAの32、128、256GBがあり、色はローズゴールド、ゴールド、シルバー、ブラック、ジェットブラックがあり。

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IMEI is being shown but ICCID is unknwon, even when insertig SIM card.

And it searches for ever service even if there is no sim card inserted

I tried reflowing the baseband (BBPMU) for 10 seconds with 350degreees, but didnt help. Anyone has an idea?

Pls no software fixes cuz its hardware related for sure

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FIX MAGNET @fixmagnet 評価: 25 1 · Answer 1 · 2018-06-18T13:04:00-07:00

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sounds like some pads aren't making contacts with the baseband and jumpers may be required

I would try another reflow @420 degrees

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I tried a reflow @ 370 degrees for exat 30 seconds ( iphone stopwatch )

But now it doesnt search at all. But i think this is because of me didnt put half the screws in the top left corner. Can this be?