Connections Bug Out Randomly - OnePlus 7T Questions & Answers

Hello, I have the regular 7t model 128GB HD1905 and randomly, my phone will drop all connections. This is the 2nd occurrence of this issue, and I managed to grab a screen cap of it.
I don't know what causes it, as it happens randomly. 1st time I was on break at work, 2nd time I was visiting family for the holidays.
As you can see from the video, the SIM card is acting like it randomly disconnects/reconnects rapidly. Throwing it in and out of Airplane mode doesn't help, rebooting doesn't help; the only solution was taking out the SIM card, blowing inside the tray, and reinserting it.
The 2nd time it happened, I didn't have a SIM card ejector tool, but it seemed like it randomly went away.
I've had this unit replaced last week as it had a green tint defect, but my previous unit experienced this bug also.
I don't think it's an issue with the SIM card, as my OnePlus 6 reads my SIM card just fine for the previous year that I've used it.
Video of what happens: https://youtu.be/a1j-6o5ChLM

So I have a HD1925 otherwise known as the 5G McLaren. I had connectivity issues immediately with my first phone and I found that my mms wouldn't work, neither would voice calls if my carrier signal dropped at my house and I was connected to my wifi. So my new phone arrived, and voice calls will work on this phone but still no mms unless I'm connected to a carrier while on wifi. Don't have this issue work my regular 7pro. Neither does the rest of my family with iPhones. Haven't figured out yet what is wrong. Will update I've I find an answer.

I had to return the 6T because my LTE would disconnect/reconnect all day long. Now I have a 7T 1905 and had my first occurrence of this today in about 10 days. I'm REALLY hoping it was just a 1 time thing, or at least a very occasional thing. I'm on T-Mobile in the USA.

Related

Please help me - Updated Info - a Clue?

Money is tight, phone broke, bought a T-Mobile Dash off Craig's list. I am a T-Mobile Customer. Tried my sim card in it before I bought it - made a call - no problem. Got home (8 miles away) and it couldn't stay connected. Searching, searching, searching. Tried husband's sim card - same thing. D/led manual to be sure sim card was properly seated. It was. Called, texted, emailed seller. No reply. Reset phone. Same issue. Switched Sim cards back and forth, back and forth. Was able to make one call for 10 seconds and then call dropped - no service. Now I'm out my money and still have no phone. Is there anyone out there with any ideas?
Update: opened case, wiggled battery, wiggled sim card, finally got some bars. Made a call successfully. Second call - call dropped as soon as connected. Third call - Call dropped before connected. Now it still shows bars but will not make call or send text. Please Please help. Somebody, Anybody??
You might want to perform a hard reset. See the sticky at the top of the page.
Cinamon said:
Money is tight, phone broke, bought a T-Mobile Dash off Craig's list. I am a T-Mobile Customer. Tried my sim card in it before I bought it - made a call - no problem. Got home (8 miles away) and it couldn't stay connected. Searching, searching, searching. Tried husband's sim card - same thing. D/led manual to be sure sim card was properly seated. It was. Called, texted, emailed seller. No reply. Reset phone. Same issue. Switched Sim cards back and forth, back and forth. Was able to make one call for 10 seconds and then call dropped - no service. Now I'm out my money and still have no phone. Is there anyone out there with any ideas?
Update: opened case, wiggled battery, wiggled sim card, finally got some bars. Made a call successfully. Second call - call dropped as soon as connected. Third call - Call dropped before connected. Now it still shows bars but will not make call or send text. Please Please help. Somebody, Anybody??
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What rom r u using? Have you called T - mobile and see if they had any signal reception problems in your area?, cause it can be a dead spot reception area.
Have you tried manually searching for other networks. Where I live, you can occasionally see TMo towers, but I do better to connect to a non TMo tower and be set on manual search.
Start, Settings, Phone, Networks (may be on second or third page)
Same here
I had the same problem with my Dash, and I gave up on it a year ago.
Symptoms:
Phone randomly loses signal every few minutes, gets it back a few minutes later.
Sometimes when it loses signal, it shows a SIM error or no SIM installed icon.
Battery meter varies wildly.
Actions taken:
Purchased new battery.
Tried another known good SIM (my wife's SIM - worked great in her phone).
Flashed WM 6.0 and 6.1
Result: Look at my sig
Anyone else experience this or have any ideas on how to fix? I don't even need the phone anymore, but it still stumps me and annoys me that such an expensive phone (it was expensive when I bought it 2.5 years ago) would suddenly quit working.
Thanks for the reply - at least I'm not the only one. Not that it helps, but .... did your Dash ever work when you first bought it?
Worked wonderfully for a year. I loved it. It started my addiction to smartphones and constant connectivity.

Radio issues

Is anyone else having radio issues with their G-pro? AT&T model here and have been having very obnoxious issues with this device. I'm familiar with the common issues of losing 3g or 4g data while in buildings and such and have always had issues with my phones while in buildings but this phone is by far the worst so far. I'm not sure if it is only a network issue or this specific phone but I can barely get it to send and receive sms inside my house. MMS, forget about it. Calls get dropped immediately when I try to make them at home, etc... Last night I was driving home and on a phone call. Over the course of the 3 hour drive I got dropped at least a dozen times. I've never had these issues with a phone. Any suggestions? Should I try to get a warranty replacement or is this normal?
Could it be your SIM card? I have only had my phone for a week and haven't had problems getting a signal. However, on my old Galaxy Note, I had a similar issue and the SIM was to blame. Have you tried turning your phone off, taking out the SIM and reinserting it to make sure it's in there fully? You could also try cleaning the contacts (the gold part on the back of the SIM).
BTW...was reading your signature and had to LOL at the part about the Nokia Lumia. I tried a Lumia and only made it a month before Android withdrawals set in--so I sold it to help pay for my OG Pro.
Haha, yeah. I liked a lot about the Windows phone but just couldn't stick with it. I'm Android through and through!!!
I'll give that a shot or maybe get into the store and get a new SIM card today. Thanks for the suggestion!
Anyone....anyone...? Bueller....Bueller...?
Swapped the SIM and didn't fix anything. Wondering if it is an issue with the phone itself.

[Q] Sprint SIM Card Not Recognized

Hi everyone,
I am having a little issue. I recently updated to KK and jut didnt like how it preformed. I .toted back to ZV7 to start fresh, this is when I noticed I had a sim card in my statusbar with a little X on it. Then I noticed that I had no LTE. I can't figure out if I did something wrong or what.
I had one of my developer friends walk me through a few things that he had to do on the G Flex, which was toting 5 or more time till that sim card was recognized, well mine still doesnt work. heck I even went into Sprint to have them check it out, and all they did was replace and scan in a new LTE card.
Could me Sim slot be turned off? or could it be fried?
I have had this issue sort of
i have had the lg g2 on sprint for about two months and i occasionally get a similar issue except it just says that there is no sim card inserted however my LTE is completely un hindered. and it would normaly correct its self after a couple reboots. is your device damaged in anyway and how long have you had the device,
It corrected itself over multi reboots. several days worth of reboots. The phone is now ongoing its 3rd week in immaculate condition. and its been babied, so no damage whatsoever.

dropping verizom netowork.

Is anyone else seeing an issue where the phone will randomly drop network for about 30 seconds and then pick it back up?
I have the unlocked model from Google and yes that happens to me on verizon. I also have a Bluetooth issue in my car where if I make a call then try to connect to my cars Bluetooth I can't hand off the call and use hands free. This keeps happening until I repair the phone.
So far I have not had this issue. I did have this issue on my Nexus 6p that it would drop my Verizon network for a few seconds about every other day but so far my Pixel XL from the Google Store has not dropped it. I did have issues with my phone connecting to my 2016 Toyota Tundra but I forgot that I can't have my phone paired to my smartwatch and vehicle at the same time. Once I unpaired my smartwatch from my Pixel it worked 100% for my vehicle.
Yeah mine is from Verizon and it had trouble activating when I went through the automatic activation. I had to call in the activation from my wife's phone. Google support told me it sounded like a bad sim so I went to Verizon and had a new sim put in and it didn't do it for about 18 hours and then sure enough it started doing it again this morning. I hope it's not a phone issue because from what I have seen the 128gb black xl is back ordered till like Christmas at this point.
If I try to send a text while it's showing no lte network I see an error that says I may be able to send a text if I insert a sim.

Samsung galaxy A50 SIM/ Mobile data problems

Hello,
Maybe you guys can help me out before I throw this phone in the dumpster.
So my phone started to overheat for no apparent reason and would shut off completely and I took it to the shop to repair,apparently the charging port was the issue, they fixed it for a reasonable price and it was all good.
Day went by with no problems and now today I cant make calls, text or use mobile data. The signal keeps going from 4 bars to 3 to 1 to the no entry sign for both sims.
I've tried swapping the sims, putting just 1 sim in i even factory reset the phone but still nothing, im not sure what else to do here. maybe my sim cards are interfering with each other or theres some obvious issue im missing?
I've tried both sim cards with another phone and both work fine, i instantly receive the configuration message from my phone provider as soon as i boot up the other phone with the sim in it but with the a50 im getting nothing.
No 4g no messages no calls nothing. Any help would be greatly appreciated. The phone is in near perfect condition bought it about 6 months ago and I dont really want to spend any more money taking it to the repair shops and i'll end up just buying another phone.
Thanks.

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