Strange 4G behavior (G960F). Any ideas? - Samsung Galaxy S9 Questions & Answers

Hello.
Sorry if this comes from nowhere, but I read a lot here, but post little to none, so I'm doing this because I truly don't know what to do or what is the problem with my device.
The thing is that my device (Galaxy S9 SM-G960F) has a really weird behavior regarding LTE mode: it has decent download speed (around 30-40-ish Mbps in every operator I've tried it), but it has really poor upload speeds (around 0.2-0.5 Mbps in those same operators). It happens in every operator in my country, and in every band (B2, B4, B7), EXCEPT for B28 (APT 700 Mhz). On that band, my phone behaves normally (20-30-ish Mbps in download and 10-14 Mbps in upload). 3G, on the other hand, works extremely well in every operator, giving me speeds around 14 Mbps download and 5-8 Mbps upload.
I've tried everything: downgrading/upgrading the modem firmware, flashing official firmware, changing the CSC to the one that has most bands compatible with my country (Chile), flashing Alexandr firmware, using different operators, etc and the problem persists. I'm beginning to think it has something to do at hardware level.
Does any of you has had these kind of problems before? How did you solve it? If this really is a weird case, does it mean it's probably at hardware level? Is it the modem? Amplifiers? Antennas?
Thanks in advance.

I think its just a case of signal fluctuations or antenna switching in the wrong times, i guess its gonna be like that.

May well be hardware.
Not necessarily the antenna or mobo although it's possible.
On the 10+ if the C port PCB is from the wrong 10+ variant it will have no internet or mobile connection. The parts look identical except for P/N.

Well, aren't you full of information.
But yes, he is correct. But I wouldn't like that to be true lest he has to give it in for repair.
Money is really rare during COVID.

blackhawk said:
May well be hardware.
Not necessarily the antenna or mobo although it's possible.
On the 10+ if the C port PCB is from the wrong 10+ variant it will have no internet or mobile connection. The parts look identical except for P/N.
Click to expand...
Click to collapse
It could be. I bought this as a refurbished phone and I don't know what parts they used to make it. To be sure though, I ordered a connector PCB from aliexpress (they were cheap...like US$9) that has the antenna amplifier and stuff just to be sure its not the motherboard (which costs a lot more than 9 bucks).
I'll be updating if I have any news regarding my issue. Does any of you have experienced something similar?

Well, my iPhone keeps fluctuating from 1 bar to 2 bars to 3 bars sometimes.
So who knows? ¯\_(ツ)_/¯

cybermiguel said:
It could be. I bought this as a refurbished phone and I don't know what parts they used to make it. To be sure though, I ordered a connector PCB from aliexpress (they were cheap...like US$9) that has the antenna amplifier and stuff just to be sure its not the motherboard (which costs a lot more than 9 bucks).
I'll be updating if I have any news regarding my issue. Does any of you have experienced something similar?
Click to expand...
Click to collapse
Just what I saw on my 10+ when the wrong variant killed the mobile connection.
It charged A-OK though
Hopefully that will get it... doesn't hurt to have a parts queen for spare parts if you really like that model.

blackhawk said:
Just what I saw on my 10+ when the wrong variant killed the mobile connection.
It charged A-OK though
Hopefully that will get it... doesn't hurt to have a parts queen for spare parts if you really like that model.
Click to expand...
Click to collapse
lol

Update: opened my phone, checked everything, even the amplifier board (the one that also has the charging flex) and couldn't see any damage. I'm about to throw the towel on this one and send it to a technician, though I highly doubt it will have any spare part, since this is a G960F and in my country, the model sold is the G9600.
Last time I make a mistake this big on Aliexpress. lol.

Related

I think I fried my GSM module(at least "half"of it)

Well heres the story suddenly my phne stopped using 3G,H networks and only works with GPRS or Edge. The phones logs into te 3G network and 2 seconds later it gets kicked out of the network leaving the phone logged out competely and then I can onlly manualy switch it to use 2G networks only to get the signal back. ANyway heres what i tried to fix the issue so far, I tried my sim card in the other phone and it works fine on both 2G and 3G networks, I inserted a sim card from different provider to my phone still no 3G network, I tried two different radios and finally I flashed my old winmo rom and well same issue.
Im prety much clueless atm what could cause the problem...it sems like a hardware issue so do these phones have separate gsm modules for 2G and 3G?
Ok found my answer
http://forum.xda-developers.com/showthread.php?t=335074&page=18
Looks like most of first batch of Kaisers suffered with this issue...oh well 3,5 half years of use is not bad anyway....3G is gone and apperently 2G module should follow soon...time to look for another phone.
Not a bad run for a 5 yr old phone. I have 2 of them, one for daily use and one for testing. They're definitely not expensive to buy or fix (11 bucks for a screen/touchscreen assembly off ebay).
Sent from my Not So Super Froyo using XDA App
Slide a thick piece of paper between your simcard's back and cover. did you get any change?
dark_prince said:
Slide a thick piece of paper between your simcard's back and cover. did you get any change?
Click to expand...
Click to collapse
Thanks for the tip but it didn't work. Its definitely a hardware issue.Seems like my gsm module is slowly dying on me.
I have had similar issues, sometimes getting kicked off the network, or consistantly the phone would drop calls after about 30 sec or so (consistently i could talk for 30 sec or so and then the phone would drop the call) I also had issues with sometimes not detecting the sim. I disassembled and reassembled the phone and it would start working again. This last time it has been running well after this for a good 6 months or so. I love this phone as for me so far it has been really solid.
-Arturo- said:
Thanks for the tip but it didn't work. Its definitely a hardware issue.Seems like my gsm module is slowly dying on me.
Click to expand...
Click to collapse
There is a device known as re-heater, often available at mobile phone repair centres. Get the TI chip, the smaller Qualcomm chip and the GSM/GPS chip (at the back side of mainboard) reheated. There is something bad with the reflow of solder in the PCB.

Baseband issue

Hello. I have an unlocked i9195 on CM13 official. I currently live in the north of England, and I use the network called giffgaff (O2). I would like to know if any baseband would do or there are specific ones for these circumstances, like os version, location, network. I have bad signal most of the time. LTE does not work 98% of times, WCDMA around 50% and GSM works almost always. Any suggestions are welcome.
Thanks for your attention.
i am also on Giffgaff in the midlands. i9195LTE
running TWRP 3.0.3.0 , AOKP official rom 20170202 , remix N v0.6 kernel.
baseband I9195XXUCPI1.tar.MD5 [Vodaphone] latest for this phone ( i believe). from sammobile/firmware ( saw thread here XDA about updating Baseband)
justdlnow said:
Hello. I have an unlocked i9195 on CM13 official. I currently live in the north of England, and I use the network called giffgaff (O2). I would like to know if any baseband would do or there are specific ones for these circumstances, like os version, location, network. I have bad signal most of the time. LTE does not work 98% of times, WCDMA around 50% and GSM works almost always. Any suggestions are welcome.
Thanks for your attention.
Click to expand...
Click to collapse
I have the latest BTU version of the baseband installed it's from around 2015 been working fine here.
Its probably a coverage issue I recommended trying other carriers to find out which suits your needs best.
I myself am using unlimited data plan on Three, works wonders.
Sent from my GT-I9195 using XDA Labs
justdlnow said:
Hello. I have an unlocked i9195 on CM13 official. I currently live in the north of England, and I use the network called giffgaff (O2). I would like to know if any baseband would do or there are specific ones for these circumstances, like os version, location, network. I have bad signal most of the time. LTE does not work 98% of times, WCDMA around 50% and GSM works almost always. Any suggestions are welcome.
Thanks for your attention.
Click to expand...
Click to collapse
Any should work, though generally it's recommended you keep your ROM and baseband to a similar release date, especially if you are having issues. Are you still on the original baseband?
You should be getting good converge on O2 or are you in a remote hilly area or near some other source of interference?
Else it could be hardware eg damaged component or poor grounding of aerial or pcb to phone ground plane. (cleaning contacts and/or tightening screws may help)
IronRoo said:
Any should work, though generally it's recommended you keep your ROM and baseband to a similar release date, especially if you are having issues. Are you still on the original baseband?
You should be getting good converge on O2 or are you in a remote hilly area or near some other source of interference?
Else it could be hardware eg damaged component or poor grounding of aerial or pcb to phone ground plane. (cleaning contacts and/or tightening screws may help)
Click to expand...
Click to collapse
No I am not on the original baseband. I9195XXUCPE1 currently. Regarding the coverage, I checked on their website and the area its pretty well covered for 4G reception, nonetheless I believe there is probably something wrong with the phone itself, I will probably just give up on this phone and spare myself some days of calamity.
Anyways thanks for your reply.
justdlnow said:
No I am not on the original baseband. I9195XXUCPE1 currently. Regarding the coverage, I checked on their website and the area its pretty well covered for 4G reception, nonetheless I believe there is probably something wrong with the phone itself, I will probably just give up on this phone and spare myself some days of calamity.
Anyways thanks for your reply.
Click to expand...
Click to collapse
yes, sounds likely that it is hardware. A quick test you could do is pop the back cover off and connect a small wire to the test connector (at bottom level with the speaker) bypassing the actual antenna, if your signal strength improves then it is proof it is your antenna circuit where the problem is or the contacts.
You can also test by pressing down where the "touch" connectors are., see vid, sometimes it improves reception showing it's a bad connection with contacts.
This is often easily fixed by removing the inner cover & cleaning the contacts or applying a little more pressure to them with a little piece of plastic between them and the cover.
You can see from this video that the antenna are simply a "touch" connection to the main assembly.
about 2mins into the vid
should be a cheap fix at a repair shop if you don't fancy trying it yourself, if this is what it is.

[Q] N7100----->N7105 motherboard replacement?

i have a note 2 n7100 which does not have 4g. if i can get hold of a n7105 board and swap it, would it work?
No it wont work
ayamati said:
No it wont work
Click to expand...
Click to collapse
Thanx for the reply but isn't the rest of the components apart from the mainboard identical?
zeeshanonlyme said:
Thanx for the reply but isn't the rest of the components apart from the mainboard identical?
Click to expand...
Click to collapse
I did this to my phone actually. The housing is slightly different for the phones so I had to use a dremel to grind away some walls inside the housing for motherboard components to fit. The antennae cable is a little shorter and has a tighter fit due to slightly different configuration on the N7105 board. You need to replace the charging port from N7100 to N7105 because they are not compatible (was less than 5 bucks). Overall, it worked hardware wise, but I don't know if it's the motherboard I bought or something else; I can't connect to 2.4 ghz wifi and 5ghz wifi connection is somewhat spotty. I also do not have 4g capability for some reason, only Edge, despite changing to the appropriate APN, mobile network, and having it on the 4g setting.
I may try flashing a new ROM on it later to see if that fixes things.
were u successful at this? I am in a similar situation

Question Cell Coverage Terrible

Came from Unlocked Note20 Ultra which I had zero issues with cellular reception on Verizon.
Bought the Unlocked Z Fold3 and have terrible cellular reception in nearly all places I never had issues on the Note20 Ultra.
Are the antenna bands different?
Is the new metal back or frame drastically reducing range?
okpank said:
Came from Unlocked Note20 Ultra which I had zero issues with cellular reception on Verizon.
Bought the Unlocked Z Fold3 and have terrible cellular reception in nearly all places I never had issues on the Note20 Ultra.
Are the antenna bands different?
Is the new metal back or frame drastically reducing range?
Click to expand...
Click to collapse
You got a bad phone. No issues on mine, same as S21ULTRA, and note 20
Try to change your SIM. It helped me.
I also changed the N20U to the FZ3 and I did not notice anything like that. I think the FZ3 has an even better coverage than the Note.
The only difference is that it switches more often from LTE to 3G, thus VoLTE turns off. But it's generally very good.
BTW WiFi coverage is much better.
I'm having the same type of issues. T-mobile here in areas where I had solid 5G or LTE I either have no service or it flips to edge/lte/5g. Probably going to send it back at this point.
Im tmobile and all is the same or better then my notw 10 plus was.
I did get a new sim card for 5g
xile6 said:
Im tmobile and all is the same or better then my notw 10 plus was.
I did get a new sim card for 5g
Click to expand...
Click to collapse
I used the new sim card from Samsung as well R15. I had T-Mobile do a reset from their end and I did a factor reset and didn't use smart switch this time. I'm going to be traveling today so we'll see if it happens again. Fingers crossed.
T-Mobile in north Texas. I'm getting the same results as my Note 10+ did, using the same sim. 5G data is very fast. May be an issue with yours.
Can we say either way about the cellular performance?
Has anyone seen a video comparing F2 vs F3 cellular performance?
xbrandx said:
I used the new sim card from Samsung as well R15. I had T-Mobile do a reset from their end and I did a factor reset and didn't use smart switch this time. I'm going to be traveling today so we'll see if it happens again. Fingers crossed.
Click to expand...
Click to collapse
Don't use SmartSwitch if migrating to a different device or OS version... its not that smart.
Probably ok for migrating just your contacts though.
Next reload on my 10+ I'll test it same to same and see how it does. Definitely don't use it to back up critical data though... remember Kies?
AT&T in N Texas, from N20U to ZF3...Same. I get some network issues occasionally.
You might need a new sim, I'm thinking about doing that myself.
My fold is also the unlocked from Sammy.
dirtybudha said:
AT&T in N Texas, from N20U to ZF3...Same. I get some network issues occasionally.
You might need a new sim, I'm thinking about doing that myself.
My fold is also the unlocked from Sammy.
Click to expand...
Click to collapse
New sim, install yourself, handle it like a stick of ram.
ESD can damage it; very little built in out of circuit protection. Most phone store salespeople handle them extremely carelessly... you pay the price when it fails sometimes even months, years latter. Most sim cards fail because of previous ESD exposure just like ram sticks.
blackhawk said:
New sim, install yourself, handle it like a stick of ram.
ESD can damage it; very little built in out of circuit protection. Most phone store salespeople handle them extremely carelessly... you pay the price when it fails sometimes even months, years latter. Most sim cards fail because of previous ESD exposure just like ram sticks.
Click to expand...
Click to collapse
Oh, I'm familiar. Build computers before, always upgrade my RAM myself, and have 3 Pi's running 3D printers. But that info is always helpful to someone.
I've noticed this too in low coverage areas. My oneplus 7t
blackhawk said:
Don't use SmartSwitch if migrating to a different device or OS version... its not that smart.
Probably ok for migrating just your contacts though.
Next reload on my 10+ I'll test it same to same and see how it does. Definitely don't use it to back up critical data though... remember Kies?
Click to expand...
Click to collapse
Why not? I used smart switch with no issues at all. Transferred everything from my oneplus 7t to the z fold 3. All it does is transfer general data and install the apk files that were on your previous data partition. It doesn't transfer any device specific apps or files.
Please back up your comments with reason and/or experience so you don't have people questioning things that they then have to spend ample time looking up
dirtybudha said:
Oh, I'm familiar. Build computers before, always upgrade my RAM myself, and have 3 Pi's running 3D printers. But that info is always helpful to someone.
Click to expand...
Click to collapse
Lots of needlessly destroyed ram sticks out there...
Sims may have some input protection but you see how small they are.
Acoustichayes said:
I've noticed this too in low coverage areas. My oneplus 7t
Why not? I used smart switch with no issues at all. Transferred everything from my oneplus 7t to the z fold 3. All it does is transfer general data and install the apk files that were on your previous data partition. It doesn't transfer any device specific apps or files.
Please back up your comments with reason and/or experience so you don't have people questioning things that they then have to spend ample time looking up
Click to expand...
Click to collapse
I've seen it screw up myself with contacts.
Seen it's predecessor Kies screw up.
If it works, fine, but don't rely on it.
It can save home settings, themes, etc and that can cause issues especially between devices.
Don't kill the messenger... others here have had trouble with it as well
It is not clear to me whether all problem are with 5G reception, 4G, or switching between the two.
I'm having terrible reception issues with my Z3. My network keeps shutting off and on. USA Verizon.
I have to undo what I wrote early. The Z3 has serious coverage problem. Very often, the signal goes missing, or the 3G-4G-5G networks switch like crazy
Broken record poster asks if this is a VZW problem in the US, or a bigger problem?
Also, there are problems with the phone folded or open?
tangmu said:
T-Mobile in north Texas. I'm getting the same results as my Note 10+ did, using the same sim. 5G data is very fast. May be an issue with yours.
Click to expand...
Click to collapse
Depending on my testing

Question Returning due to connectivity issues. Past return window too.

I already had to have a defective screen replaced but now I more times than not have no signal. My OnePlus 7t has full signal strength. I'm missing calls and it's unacceptable. I'm never purchasing another Google phone again. I should have learned my lesson with the Nexus 6p. They will be emailing me with return instructions within the next day. I demanded a remedy or a full refund and they obviously have zero remedies as it's apparent the cheap Samsung modem they used is likely the cause. I tried all the potential from fixes but nothing works and I shouldn't have to disable 2g or downgrade to lte. So disappointed with Google. Think I'll stick with my 7T until something better comes out. Maybe I'll go with the M11 Ultra.
Starzboy77 said:
I already had to have a defective screen replaced but now I more times than not have no signal. My OnePlus 7t has full signal strength. I'm missing calls and it's unacceptable. I'm never purchasing another Google phone again. I should have learned my lesson with the Nexus 6p. They will be emailing me with return instructions within the next day. I demanded a remedy or a full refund and they obviously have zero remedies as it's apparent the cheap Samsung modem they used is likely the cause. I tried all the potential from fixes but nothing works and I shouldn't have to disable 2g or downgrade to lte. So disappointed with Google. Think I'll stick with my 7T until something better comes out. Maybe I'll go with the M11 Ultra.
Click to expand...
Click to collapse
Sorry for your bad experience. My P6P has about 15% better reception and 20% better DL speeds than my Note 20 Ultra so I can't imagine it would be the modem since they are probably the same.
ggrant3876 said:
Sorry for your bad experience. My P6P has about 15% better reception and 20% better DL speeds than my Note 20 Ultra so I can't imagine it would be the modem since they are probably the same.
Click to expand...
Click to collapse
Glad you aren't experiencing this issue but it seems to be a mass issue and Google has been completely silent. I don't trust them after what I went through with the Nexus 6p which resulted in a class action suit settlement. I sense this phone will follow the same path too.
Starzboy77 said:
I already had to have a defective screen replaced but now I more times than not have no signal. My OnePlus 7t has full signal strength. I'm missing calls and it's unacceptable. I'm never purchasing another Google phone again. I should have learned my lesson with the Nexus 6p. They will be emailing me with return instructions within the next day. I demanded a remedy or a full refund and they obviously have zero remedies as it's apparent the cheap Samsung modem they used is likely the cause. I tried all the potential from fixes but nothing works and I shouldn't have to disable 2g or downgrade to lte. So disappointed with Google. Think I'll stick with my 7T until something better comes out. Maybe I'll go with the M11 Ultra.
Click to expand...
Click to collapse
who is your cell service provider? Thanks.
d.cortez said:
who is your cell service provider? Thanks.
Click to expand...
Click to collapse
TMobile. In the Phoenix metro area. Going to a TMobile store now to get a new sim card. Doubt it will help but we'll see.
I just returned from TMobile. New sim card. No change. They didn't charge me since it made no improvement. Sorry, phone is junk. Never getting another Google phone again. Never.
Starzboy77 said:
I just returned from TMobile. New sim card. No change. They didn't charge me since it made no improvement. Sorry, phone is junk. Never getting another Google phone again. Never.
Click to expand...
Click to collapse
@Starzboy77 - yikes! i had a similar problem with an AT&T P6P, when using an eSim and nano Sim (tried 4 eSims). the phone wouldn't hold a signal so i returned it to the store. the one thing i didn't try was forcing the phone to use a 4G/LTE signal (supposedly fixes some connection issues). thanks for taking time to respond to my questions.
Yea, on VZ in the Cleveland area I am dropping signal also. Never dropped with my 3XL or my Note 20.
Driving across the turnpike going to Michigan it dropped multiple times. The turnpike is rocl solid coverage. They added towers years ago to be sure it was solid end to end.
This phone is going to be a nightmare to use when the snow is gone and I start traveling on my motorcycle. I suspect I will replace it before then unless there is a software fix. This modem is junk.
Starzboy77 said:
Glad you aren't experiencing this issue but it seems to be a mass issue and Google has been completely silent. I don't trust them after what I went through with the Nexus 6p which resulted in a class action suit settlement. I sense this phone will follow the same path too.
Click to expand...
Click to collapse
Problems with nexus 6p were because of Qualcomm and their half baked soc. This is not a Qualcomm.
96carboard said:
Problems with nexus 6p were because of Qualcomm and their half baked soc. This is not a Qualcomm.
Click to expand...
Click to collapse
No. The 6p had a bad mic issue and a bad battery issue that would lead to shutdowns while still reading at 40% power. It also had bootloop issues that were related to the board I believe. It was plagued with problems which the Pixel 6 Pro seems to be matching. Connectivity, overheating, Bluetooth, battery to name a few and my first one came with a screen defect that required a screen replacement.
Starzboy77 said:
No. The 6p had a bad mic issue and a bad battery issue that would lead to shutdowns while still reading at 40% power. It also had bootloop issues that were related to the board I believe. It was plagued with problems which the Pixel 6 Pro seems to be matching. Connectivity, overheating, Bluetooth, battery to name a few and my first one came with a screen defect that required a screen replacement.
Click to expand...
Click to collapse
I can only guess that those problems are imaginary or due to some weird garbage you installed. I took mine off the charger on Friday morning. Currently at 25%. Battery life and obviously heat are non-issues. Bluetooth works perfectly.
Starzboy77 said:
No. The 6p had a bad mic issue and a bad battery issue that would lead to shutdowns while still reading at 40% power. It also had bootloop issues that were related to the board I believe. It was plagued with problems which the Pixel 6 Pro seems to be matching. Connectivity, overheating, Bluetooth, battery to name a few and my first one came with a screen defect that required a screen replacement.
Click to expand...
Click to collapse
And fwiw, Qualcomm pmics always read bad on the battery.
96carboard said:
I can only guess that those problems are imaginary or due to some weird garbage you installed. I took mine off the charger on Friday morning. Currently at 25%. Battery life and obviously heat are non-issues. Bluetooth works perfectly.
Click to expand...
Click to collapse
My problem is connectivity issues. The battery, Bluetooth and heat issues are widely discussed and reported.
96carboard said:
And fwiw, Qualcomm pmics always read bad on the battery.
Click to expand...
Click to collapse
My issue with the 6p was the bad battery. Mic was fine.
Connectivity was the worst for me with TMobile, download speed of less than 1mbps, calls and texts were bad, after a decade of loyalty i ditched them, went to at&t and all good, only problem i have with this phone is the screen not responding to touch for a few seconds a few times a day
I sent mine back to be repaired mic didn't work at all. I sure hope they send me a new phone and not split it open
I have been hesitant to say there's connectivity issues on the P6P. However, my experience hasn't been great. Compared to my P4a5g, signals are similarly weird but I get more bars consistently on the P4a5g.
Disclaimer: I straddle weak 5g and LTE signals in almost dead center of SF.
Even turning off 5g to eliminate the terrible handoff to LTE, I bounce between LTE bands on each end of our flat.
I have to be right in the middle of a strong signal area to get full bars with the P6P; consistent 5g is elusive.
Maybe it is time to look at other carriers? I have been with TMo since 1999. Seriously.
Would love to hear from anyone in SF on their carrier experiences. Have always avoided Verizon and AT&T. What about Google Fi?
My sim card is ~4-5 years old. I should get a new one. Is eSim better for signal?
johninsf said:
I have been hesitant to say there's connectivity issues on the P6P. However, my experience hasn't been great. Compared to my P4a5g, signals are similarly weird but I get more bars consistently on the P4a5g.
Disclaimer: I straddle weak 5g and LTE signals in almost dead center of SF.
Even turning off 5g to eliminate the terrible handoff to LTE, I bounce between LTE bands on each end of our flat.
I have to be right in the middle of a strong signal area to get full bars with the P6P; consistent 5g is elusive.
Maybe it is time to look at other carriers? I have been with TMo since 1999. Seriously.
Would love to hear from anyone in SF on their carrier experiences. Have always avoided Verizon and AT&T. What about Google Fi?
My sim card is ~4-5 years old. I should get a new one. Is eSim better for signal?
Click to expand...
Click to collapse
I mean I think we're pretty lucky in North America because we get to choose from 3 providers instead of one (the more the better for sure). I'm not in SF but I know that sometimes, changing cell providers can make a world of difference. even in cities. different towers from different companies use different bands. it can make such a difference. a good start is a new SIM card for sure. I suggest people get a new one every 5 years.
some providers might also give you a 2 day trial, maybe look at that option? (they do in CA).
@Alekos thank you for the feedback.
Since the P6P supports eSim, testing other providers should be easy, right? I am guessing that using eSim doesn't make a difference in network connectivity performance. If you understand otherwise, please let me know.
And yes. I will definitely get a new sim. Can't hurt; might help.
Thanks again.
Starzboy77 said:
I already had to have a defective screen replaced but now I more times than not have no signal. My OnePlus 7t has full signal strength. I'm missing calls and it's unacceptable. I'm never purchasing another Google phone again. I should have learned my lesson with the Nexus 6p. They will be emailing me with return instructions within the next day. I demanded a remedy or a full refund and they obviously have zero remedies as it's apparent the cheap Samsung modem they used is likely the cause. I tried all the potential from fixes but nothing works and I shouldn't have to disable 2g or downgrade to lte. So disappointed with Google. Think I'll stick with my 7T until something better comes out. Maybe I'll go with the M11 Ultra.
Click to expand...
Click to collapse
The same thing was happening to me about 2 months ago on both of my Poco F3's right before I got the 6 Pro. It ended up being something with T-Mobile as the problem stopped about a week and a half later.

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