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[N 6P][H1512-Int.][LTE Problem]tinkered around with hidden menu,cant connect to LTE

i have a rooted nexus 6p (h1512) (the international version) with a custom rom (pure nexus rom) and custom recovery...after rooting the device i foolishly tinkered around the hidden secret codes on my device..i downloaded an app called shortcut master (lite)....and searched for some hidden codes...i selected a code 3282 from the options....went into dataSettings, then into lte // edit///(i knew the msl code 000000) and tried to enable band 26...the reason i did that was because i was using an lte sim card and was not getting proper speeds...so i figured enabling a band may make a difference...besides i thought..i could always revert it back...as soon as i enabled band 26....the phone restarted and now i cant get the lte network (no bars)...i went back to the hidden menu to revert the settings but the settings there were exactly similar as before( band 26 was still disabled) ...i cant see any changes that my fooling around had done..and even though i cant get any bars with lte sim....the apn settings associated with the sim are still there..
and i also inserted other 3g sim cards in the phone ...they work perfectly okay...so i think it has something to do with lte bands....i have also flashed the stock factory image from google after this problem after wiping everything, but that didnt solve the problem....i then reflashed the radio too....but it didnt help...so then i went back to my custom rom
is there any way that i can reset the changes i may have made?
any help will be greatly appreciated..
these are the current lte settings on my phone( there is no difference compared to when lte sim was working)
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is there any way to reset lte settings?
i think my messing around with these hidden codes has changed some underlying deep seated huawei modem firmware settings...
i just want to know if any of you guys know how to fix this problem? any help will be greatly appreciated.
Edit : All non lte sim cards work just fine..and yes, i inserted that lte sim in other phones and it works just fine, so the sim has no poblem..
EDIT 2: SOLVED...after much searching for solution, bet all my cards on efs partition restoration, was successfull...anyone having similar problems , pm me if u wanna know the commands for nexus 6p to erase efs and its restoration.
CHEERS!!!

Having the same issues on my wife's phone hopefully someone finds a fix.

Had the same issue, download netmonster from market and go into phone info, then turn off cellular radio then turn it back on. Worked for me

Problems with other operators s7 verizion

I ve bought s7 in Asia. And i didnt know that its a big problem that it is a verizion version. Now all the time when i travel and changing sim cards i need manualy to add Apn point to use internet and not all people who sell know this details. (Usually when u buy sim and insert it this settings are alrready inside u just have to send message or choose apn point)may be there is some custom rom which will help with it?and the most important problem which i didnt solved yet happened yesterday. In Thailand i ve bought new sim. And to activate 7 days internet need to send code starting from *9 or to check internet balance *900# . But it's not possible to do!!! Because whatever u will type starting from *9 u will get a message something like "forward calling type US number" so yesterday i spent 30 minutes trying to apply this internet. And nothing helped,I also look the code *72 or othet to switch it off. Not working. Im so disapointed with this verizion. I want to get rid of all this codes *9 and in other unlocked galaxy phones i could choose mobile network in settings(lte,gsm) or choose operator. Here it's happening automaticly.help me please,because i cant even use this normal code which starting from *9.. all the time this stupid message with call forwarding
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Try flashing the 930U firmware to the phone. It will flash it to the US Unlocked version. If that doesn't help maybe just sell it and get the 930F international version.

All phones I have that are carrier specific you need to enter APN settings manually. APN settings aren't attached to the SIM card, especially if its a prepaid one. I normally get the APN settings online or from the store I bought the SIM card or I know there are a few apps out there with APN databases for countries/carriers
---------- Post added at 04:33 AM ---------- Previous post was at 04:30 AM ----------
You can choose what network to connect to but APN settings are needed for data only, not voice. Under settings > mobile networks > network mode > choose GSM > Manual > then at the bottom you can choose the network operator

Lenovo k6 note recieves calls, but does't make calls or use data!

hello guys,
I rooted my phone, and since the moment I rooted it. it put a dash on my sim card sign on the notification bar. although when I lock the mobile I see my network operator appear on lock screen.
the phone receives calls and doesn't make calls. and also one other thing I noticed is that I can't allow apps permissions from the message box that appears in app. I need to go into settings to enable them from settings.
help me on this
as u can see in the screenshot, it says Vodafone in lock screen and sim card slot is empty in notification bar, so it recieves calls, and doesn't make outbound calls or connect to data.
https ://imgur .com/iLDhOWM
remove spaces for screenshot link
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https://imgur.com/iLDhOWM

update
updated with screenshot on imgur

You have your imei? Check by dialing *#06# and also check whether your wifi and bluetooth mac address is available in settings > about> status

sk.vyshak said:
You have your imei? Check by dialing *#06# and also check whether your wifi and bluetooth mac address is available in settings > about> status
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yes I have my Imei and I have my wifi and bluethooth mac address, I can use wifi and bluetooth on it.

swordsaad said:
yes I have my Imei and I have my wifi and bluethooth mac address, I can use wifi and bluetooth on it.
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So no serious issues. Just OS has some problems. Try factory resetting it. Else download stock firmwsre and flash it. Dont downgrade if you are doing that. You will loose your baseband.

could you refer to the most trusted source on how to flash stock firmware please. I always try it and fail.

No networks or mobile data after flash

Hi, i'm kinda desperate but I'll try to be as clear as possible. So.
Recently I got an used galaxy s8(G950F), at the time I got It, i could get network,make calls and lte with no problems, so, I saw that the mobile was rooted and also I had really bad problems of battery,like I almost lost all my battery because of the usage of android system,( i think an app was bugged or something because my phone was really overheating when I was only using chrome and nothing more, and happened with every app I used), I didn't want the device rooted and with that problem of battery. So I tried to flash another room in order to try to fix it, and when I did, I couldn't get into network, I only get the "emergency calls only".again, In order to try to fix that, i flashed some same csc and pda firmware,then another firmware with only same baseband, (always with original firmware) and nothing seems to work. I really don't know what to do now, I pulled out the sim before factory reset, and put it after, turning off airplane and turning on, like any easy solution I could find I tried it.I'm out of ideas. One thing I saw is that the firmware I had before has pda and csc from a firmware from MXO but a baseband from ARO that ends in CR1. I couldn't find a firmware like that and also I want to know if I can fix it, really. I'll really appreciate any help. Thanks.
Some more things: if I do try to select a network at the select networks operators I get "error while searching for networks" ,the network I'm trying to connect is movistar, I'm from Argentina, I'll attach screenshots of the firmware I had before (the one that was working the mobile data) and now, also the imei didn't change or disappear so I don't think that's the problem.
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´
EDIT: ok, i send the phone to a repair shop and turns out that the imei is blacklisted and has been changed.also the person who sold me the phone didn't mention anything about that, so when i restarted my phone it came back to the original imei. big oof for me. if any moderator sees this you can delete the post.

wifi and 4G handover connection problems

Hello, I have a Xioami MI9T, for a few days I started having problems with 4G, I am in WIFI and everything is fine, when I turn off the WIFI or leave the coverage and connect to 4G, it shows connected, but it does workn, no WhatsApp , Waze does not connect and if I enter to the Chrome it gives me different errors such as: ERR_TUNNEL_CONNECTION_FAILED, err_proxy_connection_failed, err_network_changed, ERR_CONNECTION_RESET, etc., then I put it in airplane mode and take it out and it connects well. Also being in 4G, the mobile disconnects and connects a lot times, when it connecta again the same problem happen, ERR_XX message and I have to put airplane mode and take it out. I am from Argentina I spoke with Movistar (ISP) and they say everything is ok.
The phone installed a last update, I can not say that this is the problem, because I do not remember when it started, now I have: MIUI Global 11.0.3 Stable | 11.0.3.0 (PFJEUXM). The phone model is M1903F10G.
Thanks a lot for your help.

pabloabdala said:
Hello, I have a Xioami MI9T, for a few days I started having problems with 4G, I am in WIFI and everything is fine, when I turn off the WIFI or leave the coverage and connect to 4G, it shows connected, but it does workn, no WhatsApp , Waze does not connect and if I enter to the Chrome it gives me different errors such as: ERR_TUNNEL_CONNECTION_FAILED, err_proxy_connection_failed, err_network_changed, ERR_CONNECTION_RESET, etc., then I put it in airplane mode and take it out and it connects well. Also being in 4G, the mobile disconnects and connects a lot times, when it connecta again the same problem happen, ERR_XX message and I have to put airplane mode and take it out. I am from Argentina I spoke with Movistar (ISP) and they say everything is ok.
The phone installed a last update, I can not say that this is the problem, because I do not remember when it started, now I have: MIUI Global 11.0.3 Stable | 11.0.3.0 (PFJEUXM). The phone model is M1903F10G.
Thanks a lot for your help.
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Nobody?
Thanks

Go to> sim card settings > access point names > APNs > edit access point > erase the proxy and port section and save it

erfan3776 said:
Go to> sim card settings > access point names > APNs > edit access point > erase the proxy and port section and save it
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I'm in Argentina, Movistar is my ISP, when I insert the sim in the APN configuration apperared the APN for MOVISTAR with wrong configuration (Proxy and port) but it is imposible to change or remove the APN so I created a nwe APN with the correct values. Is there any way to remove this default APN?
Thanks

pabloabdala said:
I'm in Argentina, Movistar is my ISP, when I insert the sim in the APN configuration apperared the APN for MOVISTAR with wrong configuration (Proxy and port) but it is imposible to change or remove the APN so I created a nwe APN with the correct values. Is there any way to remove this default APN?
Thanks
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Use Reset button