Still searching after baseband reball - not the usual issue
Got an iPhone 6 for repair, was showing no modem firmware and no Imei after the 06 dial test. Done monkey see monkey do, jumped 2 pins, reballed baseband and got half of the problem solved. Now it shows modem firmware and IMEI number is listed in iPhone Info, however the *#06 # test dial keeps not showing IMEI and phone still stuck on searching. SIM is correctly detected when inserted and NO SIM warning prompts as it should. It seems baseband is working fine or am I missing something ?
Anyone had a similar issue solved and can provide some insight ? Thanks
Tried replacing U_ASM_RF as well, no joy. I'm a bit at a loss here, the other two candidates (WTR1625L and U_WFR_RF) look pretty hard to replace and I don't even seem to have the right stencils. Any reasonable way to test baseband further or should I add this to the pile of spare boards ?
Is this a good question?
2 Comments
It really boils down to how much time you want to waste vs. how much you hope to get out of an iPhone 6.
No IMEI would not be WTR in my opinion (I think that you may have an issue with your BB_CPU but I am not so good with baseband troubleshooting), but if you want to replace it, it will be easy to reball compared to the BB_CPU.
by Rany
@rany It's a 64Gb, so there's still some value and I can dedicate another couple of hours work to it, especially thinking the BB already seems to be fixed. I didn't even think about troubleshooting the BB_CPU, heaven knows why, thanks for the hint. I've also noticed ZXW has got resistance values for this phone BB..I don't especially love the idea of another reball, but it would be an interesting alternative. Will update with the outcomes.
by arbaman