Hey guys, I bought a new Redmi Note 7 Pro from HKGoldway recently. The phone arrived undamaged but the simcard's I've tried to use go into a constant connect and disconnect loop. HKGoldway never helped me out so I lost my money on it.
I believe it's a hardware issue as I've factory reset, tried different sims, rom updates and changing radio settings.
Has anyone had an issue like this and was it fixable? Or should I just bin this phone as it's pretty much just a small tablet without it's cellular feature.
Video of the issue here:
https://www.youtube.com/watch?v=-WqCdt2NKhU&feature=youtu.be
Cheers
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Hi guys,
I've been a lurker on XDA for quite some time, and I just want to say, I absolutely love you guys. You're all very helpful and so knowledgeable. I can finally say I have an issue, I'm hoping is a software issue only, that I need help with.
Last week I was running Stock Rom Lollipop 5.0.1 on my Google Nexus 5 and now I cannot get a GSM signal AT ALL. No Calls, No SMS, and No Data. The same SIM card can work just fine on my unlocked Nokia Lumia 635. I am long past my RMA. What can I do to try getting the GSM to work and TURN ON MY GSM RADIO? I'm sure if the radio turns on, everything else should work as well.
Brief History: Phone has been dropped on cement before and got Screen replaced. My internal speaker got loose and I just got it readjusted by a nice technician near where I live. I've survived with this phone from Day 1 until now with some cosmetic wear-and-tear, but it was only from last week before I left work, AFTER I UNPLUGGED MY PHONE FROM THE WALL SOCKET that the GSM signal just dropped.... permanently. And what I mean by this is, the "radio" is off permanently (I cannot turn it on even with the option in *#*#INFO#*#* with SIM card inserted) even after reboot, airplane mode on/off, and APN setup (which can never be saved and hangs when selecting automatically 'detecting'). Note: The Phone can charge just fine and connect to the computer perfectly fine as well (in case you guys think it may be related to the microUSB port assembly). I have been taking out my SIM frequently, so I'm still not 100% sure if it is or is not my SIM Card Reader pins that have an issue.
I have fastbooted several factory images on this device many times from the Google factory images repository, mainly going back and forth between 4.4.4 and 5.0.1 which I believe are the best releases so far IMO. Even after installing the factory roms on this phone, (no root) I still get no signal no matter what I do. When I remove my sim card tray from the phone, I get "No SIM Card". When I put it back in, I get that message going away, which gives me the impression the SIM card reader is fine. My technician took a look at the entire phone hardware and said he didn't find ANYTHING strange. He tried using a known working back-cover with antennas to debug the issue but that didn't help. I don't remember what he said about the sim card reader, but I think that was also fine (will double check next week). When I got the phone back from the tech, he just told me that there are no "hardware" issues he knows of, and so this must be "software".
Any leads you can give me? I'm pretty tech savvy, and do understand things like partitions, fastboot, adb, etc, so any solution, even abstract, I'm willing to try. Google reps were pretty clueless on helping me out here, so I'm looking for some support, please!
I've also heard that this issue is not uncommon on Nexus 5. Is this true? How many users have been having this issue? I thought Nexus 5 should have been built great to last a long time... guess I was wrong.
hisaam-san said:
I've also heard that this issue is not uncommon on Nexus 5. Is this true? How many users have been having this issue? I thought Nexus 5 should have been built great to last a long time... guess I was wrong.
Click to expand...
Click to collapse
Same situation on my Nexus 5 that started a few days ago. Thought it had something to do with the 5.1 Lollipop update and saw some users were having similar problems. Tried flashing different radios/basebands/roms/kernels to no avail. Currently running 5.0.1
Hoping it is not a hardware problem, going to take it to a local technician today. Also beyond warranty. Everything else works fine. Has always been in a hard case but dropped a couple of times with no prior issues. Any insight?
5.1 is the best software. If it's not hardware all I can suggest is a full factory reset. My SD card was not acessable and pple said try this and that command. No luck. Did a factory reset and got the SD back Oh and screen shots which had gone as well.
Sent from my Nexus 5
Hi guys,
So the other day, phone was working fine. All of a sudden, it comes up saying 'No SIM Found'. The phone is pristine, have never dropped it, not a scratch on it. Have had the SIM replaced, no dice, works fine in my Note 4 though... Also tried the whole 'jam a little bit of cardboard in' caper, in case the SIM wasn't making contact with connectors. Have flashed stock firmware on that too, nothing...
I've read a little on region locking and the like but it doesn't seem to be the case - though I'd love to hear if anyone has a potential fix associated with this so I can try it.
Anyway, long story short, has anyone come across this and has anyone fixed it? I took it to Samsung and they say that they have to replace the mainboard of the phone...
Thanks in advance guys.
Anyone?
SIMs can suddenly fail. Have you tried getting a new one?
Sent from my SM-T710 using Tapatalk
Try installing a custom rom. Your only option left without sending it to samsung
Did you found any solution to this?
Hi,
I am wondering if there ever was resolution to this issue. I am running into same exact problem and tried most of general items, except re/soldering the sim reader again
I took it to authorised Samsung repair shop in Croatia for sim reader replacement, and they replaced whole motherboard in factory warranty, even thou I told them I bought the phone over ads and have no warranty.
Hi, I bought a used Verizon Note Pro 12.2 SM-P905V and when I got it, noticed that the wifi is very flaky. Initially, it connected to my router fine but took 9 hours to load 120 apps when I signed in to Play using my normal Google account. So I did a factory reset, and then it wouldn't see my router at all. Restart router, factory reset device, no dice.
In the notification shade, wifi icon is always green as if it's on, but when I go into settings, the toggle is off. When I slide it to on, it turns gray and after a minute or so goes back to off. Multiple hard resets, still the same issue. Occasionally, it will "see" the routers, but this only lasts for a few seconds and then they are gone.
So I decided to flash the firmware. I did not complete another factory restore before I embarked on this, but had only just gone through the initial language screens and signed in on the tablet with a brand new Gmail account that had nothing on it. So I downloaded official 5.1.1 ROM from Sammobile, installed device drivers, installed Odin, (followed some great instructions found on XDA, thanks), got the tablet into download mode, connected to laptop and Odin on my laptop showed connection was live and it began to do it's thing. So I left it alone for 30 minutes and when I came back, Odin read "all done!" (or something similar) highlighted in green , and the tablet had restarted, so I assumed all is good.
However, I expected that the flash process would have wiped the setup I had begun on the tablet, but it did not. And the wifi issue still exists. Looks to me like nothing has changed. So two questions for you:
1) Does this mean that the flash did not happen correctly?
2) Do you have any suggestions on how I can fix this wifi issue? (LTE works fine but I don't want to eat up all that expensive data.)
Thanks for any help!
Wifi circuit has many components on mainboard and I believe it's beyond abilities of most users even professionals as you cannot find components and schematic to fix them.
Your best source is looking for this tablet with a broken LCD like this one:
http://www.ebay.com/itm/172145691764?_trksid=p2060353.m1438.l2649&ssPageName=STRK:MEBIDX:IT
http://www.ebay.com/itm/Samsung-Gal...069075?hash=item1a15927393:g:D8MAAOSwbYZXZKDb
If you don't have the need to LTE connection, Note Pro wifi mainboard SM-P900 also fit but you need rear camera for SM-P900 as rear camera of LTE won't work in Wif mainboard.
Any LTE Note Pro 12.2 like P907T( Tmobile) P907A ( AT&T ) mainboard will fit to P905V as they are exactly the same mainboard, except firmware, bootloader and software loaded into it.
I swapped a SM-P907A mainboard to a SM-P905V tablet, it works as an AT&T tablet because the software is for AT&T.
I purchased a verizon note pro 12.2 SM-P905V refurbished from groupon last October. For the last few months the wifi on the tablet has been very flaky. I have a number of devices and only this one frequently drops connection. I never upgraded from kitkat I and was hoping that this issue was software related. Seeing that moransw is experiencing the same problem with this same model but is trying to get back to sock kitkat gives me concern that a software update will not resolve the problem. The other problem I've been having lately is that the device no longer recognizes the stock charger, and will now only charge painfully slow. I've tried a different charge cable from a samsung s6 to no avail. Is the SM-P905V a lemon?
You should use this one to test your charger and usb cable
http://m.ebay.com/sch/i.html?_nkw=u....Xusb+voltage+current&sqp=usb+voltage+current
If you're using correct cable and charger, current should be 1.7 A and voltage should be 5.3 V
Test with known working cable and charger, if nothing is different you should consider to buy new usb flex charging port, around $10.
These basic steps you should do first as nobody can give exactly an answer with many unknowns. It happens to many used tablets, not just this model.
These basic troubleshootings are easy done for simple problem of bad cable, charger or USB port
Try them first then post your results if you need more help for further steps
moransw said:
However, I expected that the flash process would have wiped the setup I had begun on the tablet, but it did not. And the wifi issue still exists. Looks to me like nothing has changed. So two questions for you:
1) Does this mean that the flash did not happen correctly?
2) Do you have any suggestions on how I can fix this wifi issue? (LTE works fine but I don't want to eat up all that expensive data.)
Thanks for any help!
Click to expand...
Click to collapse
1) I am using stock kitkat rooted and I was experiencing the same issue
2) I found this thread regarding our tablet that seems to suggest a bug with wifi if you are using a Bluetooth device
http://forum.xda-developers.com/galaxy-note-pro-12/help/wifi-disconnects-bluetooth-device-t2851406
I was streaming audio through bluetooth to my home surround system, I disabled the bluetooth radio and I haven't had an issue with wifi since. I now use chromcast to stream audio through my surround sound.
Hello guys. Yesterday I bought a Samsung Galaxy S6, the "normal" S6. I bought it from a guy, tested it 2 times everything fine but today I discovered that the rotation is not working properly. When i dial *#0*# and test the sensors, all pass but the gyro test fails. The phone doesn't have warranty, and I wanna know guys if you also got this problem and if you fixed it. If not, I could replace the gyroscope/accelerometer or what the heck is not working in a GSM service?
A friend told me that if the sensors are damaged then the phone can't be repaired. Please help me if you can. ?
PS: Sorry if I typed wrong.
If your friend doesn't repair phones for a living, then perhaps you should ask someone who does if it's repairable....
Sent from my SM-G920W8 using Tapatalk
Changing rom doesn't solve it? I haven't tried this yet..
It is possible that it could be a software glitch. I had the issue with my ex-S6 Edge, I got it fixed by telling Samsung to reinstall the firmware for me.
I now have an S6, I used Samsung Smart Switch yesterday to reinstall the firmware on my phone. It fixed some issues I had along with less heat and better battery runtime. I suggest you do the same, it's worth a try.
Just be sure to charge your phone to 100% and use *only* the original USB cable from Samsung. You could end up with a bricked phone if you use third party cables, other users have ended up with such fate.
DaryllSwer said:
It is possible that it could be a software glitch. I had the issue with my ex-S6 Edge, I got it fixed by telling Samsung to reinstall the firmware for me.
I now have an S6, I used Samsung Smart Switch yesterday to reinstall the firmware on my phone. It fixed some issues I had along with less heat and better battery runtime. I suggest you do the same, it's worth a try.
Just be sure to charge your phone to 100% and use *only* the original USB cable from Samsung. You could end up with a bricked phone if you use third party cables, other users have ended up with such fate.
Click to expand...
Click to collapse
I have the original cable, but if I use it there are no chances of bricking it right? I did 3 factory resets already, and I cand replace the sensor with problems, it will cost me pretty much. I also have something with the camera. It looks like it takes whiter pictures, I think. I'm going tomorrow in a store to see another S6, to see if the cameras are the same.
velea18 said:
I have the original cable, but if I use it there are no chances of bricking it right? I did 3 factory resets already, and I cand replace the sensor with problems, it will cost me pretty much. I also have something with the camera. It looks like it takes whiter pictures, I think. I'm going tomorrow in a store to see another S6, to see if the cameras are the same.
Click to expand...
Click to collapse
If your phone isn't rooted, if you haven't tripped KNOX. Then you should be good to use Samsung Smart Switch to reinstall the firmware. I used it just about four days ago to reinstall the firmware on my S6. Solved many problems for me. It's worth a shot before replacing the hardware.
Hey!
So basically this idea came of nowhere...
I just found my old Nexus 7 somewhere in my room and decided to check if it still works, it didn't, BUT, I have contacted with my friend, who is much better in electronics hardware and overall has more engineer experience than me, who suggested to check the battery capacity and connection with the battery. It seems that did the job, because after pulling out it and putting it back did the job. Yes!
In the following days, I have also recovered my Xperia Mini Pro (Sk17i) successfully, now running Android 6 with Class 6 Card (yes, I know that is a nightmare, but there is a new one on the way with the current largest speeds), anyway, I decided to give my Nexus 6 to my friend as a gift, as he had much worse phone. While we found the best ROM for him, I told him about my great day with the Nexus 7, Mini Pro then he told me he also has an Alcatel One Touch which seems having a Bootlop, it didn't last long, because I have managed to flash and install some Xperia Rom (2.3.6) on it.
I was so happy that I have decided to check what is up with my old X10 Mini Pro (u20i), it seems it actually good, but it does not. The phone itself vibrates upon turning on and I can even enter flash mode, so I have used Flashtool to recover the original Android 2.1 on it (since SEUS is dead) and it seems it does turn on again, but it does not, the problem is that the screen lights up, but nothing appears, just like the Nexus 7 did (that did some sort of flickering, too). Is there any chance you guys have any suggestion what could be the problem? I have ordered a new battery into it BST-38 on eBay and a new display from AliExpress, that might does the job.
Wonder if you guys have any tips on it?