I'm from Germany and can't get my German SIM cards to connect to a network with my Redmi 2 2014813. The cards are recognized in the settings though, they just don't connect. The cards definitely work (tried with another phone) and within my room where I tried all this my old mobile phone picked up the signal with those SIMs fine.
I already tried everything imaginable... since I read that this issue isn't unheard of.
Strangely enough, with the former ROM (before the CN ROM there was the modified Global ROM installed, I wiped the EU ROM for some reason before installing the CN ROM) I got a full PASS on that category (everything alright), but now I get a FAIL in a few categories...
Those are "cali_cdma" and "cali_cdma_multi", Modem= MPSS.DPM.1.0.1.c1-00126-M8936FAAAANUZ, Factory Test Mode = Online Mode
I also checked if the USB PCB is properly connected to the MAIN PCB and if the antenna cable between MAIN PCB and USB PCB is connected properly and if the cable itself is undamaged. I also shifted the sides of the cable (connector which was on USB side to MAIN side).
Could it still be a bad antenna cable? I have no other one to try, just normal thin wire from soldering projects. Does the USB PCB has anything to do with signal pickup (since the antenna cable is connected to it)? Is there a special spot on the MAIN PCB which I can check?
The story behind that phone is that I got it for nearly nothing but the screen was dead and I had no batteries for it. I ordered two official BM44s and a full front bezel with frame. I also migrated every part from the old front bezel to the new one, but might there still be a part which I might have forgotten?
Otherwise, btw, the thing works flawlessly, WiFi is fast (connects within seconds and doesn't cut off)...
I appreciate all suggestions and thank you in advance.
I already tried everything imaginable... since I read that this issue isn't unheard of.
- Flashed the Chinese NON-HLOS.bin separately (via Windows CMD "fastboot flash modem NON-HLOS.bin" while phone was in fastboot mode and connected to the PC), no errors but still no success
- Flashed a modified Global ROM for 2014811 via fastboot (replaced NON-HLOS.bin from that image with NON-HLOS-bin from CN image, got mismatch error, removed 2 lines inside the batch file), no errors but still no success
- Installed the EU image (Thread ID 6-7-21.32952), Therefore TWRP, HM2XTDPro, no errors but still no success
- Flashed the official CN image wt86047_pro_images_V7.5.1.0.LHJCNDE_20160629.0000.25_5.1_cn_8950d04495.tgz via fastboot 'cause I thought that unaltered official image might fix it, no errors but also no success
- I also tried dialing *#*#4636#*#* but I couldn't do much with that menu, I think I should mention that with both SIM cards it tells me "no neighboring cells" at "Neighboring CID", I couldn't "turn on radio" on the bottom of the page nor could I change the Network type - I can tap on "GSM only", choose something else but it will stay "GSM only"
Strangely enough, with the former ROM (before the CN ROM there was the modified Global ROM installed, I wiped the EU ROM for some reason before installing the CN ROM) I got a full PASS on that category (everything alright), but now I get a FAIL in a few categories...
Those are "cali_cdma" and "cali_cdma_multi", Modem= MPSS.DPM.1.0.1.c1-00126-M8936FAAAANUZ, Factory Test Mode = Online Mode
I also checked if the USB PCB is properly connected to the MAIN PCB and if the antenna cable between MAIN PCB and USB PCB is connected properly and if the cable itself is undamaged. I also shifted the sides of the cable (connector which was on USB side to MAIN side).
Could it still be a bad antenna cable? I have no other one to try, just normal thin wire from soldering projects. Does the USB PCB has anything to do with signal pickup (since the antenna cable is connected to it)? Is there a special spot on the MAIN PCB which I can check?
The story behind that phone is that I got it for nearly nothing but the screen was dead and I had no batteries for it. I ordered two official BM44s and a full front bezel with frame. I also migrated every part from the old front bezel to the new one, but might there still be a part which I might have forgotten?
Otherwise, btw, the thing works flawlessly, WiFi is fast (connects within seconds and doesn't cut off)...
I appreciate all suggestions and thank you in advance.
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