What is EFS Clear? NV Rebuild? - Non-Touchscreen Windows Mobile Other

I somehow f'd up my samsung blackjack.
I cannot press any keys during phone calls. So I can't enter PIN numbers or call customer service hotlines, because the numbers won't get transmitted.
So I looked through the admin settings/TestMode, and I see EFS clear and NV Rebuild.
What happens when I run either of these things? Will it brick my phone for good?
will it restore button/keypad functionality during phone calls?

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HELP - Call History Recovery possible?

I need a bit of help here please!
so i was out last weekend and met a hot girl, got her number but i just did the old put it in my phone and dialed it to save the number in call history thinking i would save it properly later. But then next day i forgot i had done that and reset my call history on my phone loosing the number! gutted.
so is there anyway i can restore my call history or is this just going to be the one that got away?
thanks for any help!
did she actually answer the call? If so you may be able to retrieve it from your on line itemised bill, if your carrier offers it.
nope, i just dialled then hung up so it would save it in my call history, oh well!

M0111 comes up when dialing prestored numbers.

Anyone else yave this problem? On some stored numbers in my contacts when i click on the person it dials an m0111 befoe the regular number. But when i look at the contact before i press call the correct regular number is there. Its only when i hit call it tacks that on. The contacts are verizon numbers also. Ok the M is normal as it means mobile number that is being called. The last 1 in the 0111 is the start of the area code. Ex 1-201-52*-****. I called the verizon and they said it is trying to dial international for some reason....they want me to hard reset i said no im not doing that yet.

[Q] Phone call issue

Hey guys, just had an issue with the phone calling system. I realized that whenever I try to dial an number of a place/business that I find on the Chrome Browser, and when I try to dial it, the call immediately ends as soon as I try to place the call. I'm on Sprint by the way. The only way the call will work is if I punch it in manually without any of the area codes involved either. I find it odd.
Anyone have a clue what the issue is?
Most of the numbers you find online will be GSM formatted in that they may trigger a +1xxx-xxx-xxxx. IN that case sometimes it might fail on CDMA carriers which don't use +1. Before hitting dial just delete the +1 and then call. If the +1 doesn't show up and it displays the number in the normal format then I have no idea

[Q] Need Help With Recovering Call Logs!!!

Hello --
I have an emergency situation involving a Galaxy S4 and missing data and I am hoping someone here can help me in the next couple of days. The phone all of a sudden deleted all call logs more than a month old. The phone is a year old and there are no settings in the phone to manually change call log storage. There is plenty of memory and space on the phone. The issue is there are several incoming phone calls which are not showing up on the carrier's phone bill, they only showed up on the phone's call history.
From what I have been told the only way to recover missing call logs is if you have "super user" access and have not factory reset the phone. The phone was never rooted and it was not backing up the call logs to the backup app on the phone. The app only maintains event history, so you can see that a phone call was received at a certain time but there is no phone number.
Its very important that the call logs are recovered due to a legal matter. I am also trying to figure out how to stop the call history from auto deleting and figure out why the phone is doing other strange things. Is there someone on these boards who can either physically help me in person or who legitimately knows a way to retrieve the call logs from the OS? I know it is possible according to the manufacturer but I don't have the tools to do it. (And yes I have been to the carrier, Samsung and multiple cell phone repair shops). I almost need a cyber security expert or something to troubleshoot this.
Thanx

How does IMEI Repair work? Does it changes the number?

I have been seeing stuff pop up about about IMEI repair which basically can take a blacklisted phone and make it work with a certain network/s.
Simple question how exactly does it work? Does it change the IMEI number of the phone?
Messing around with IMEI stuff is at best a grey area, so it doesn't get discussed here.
If you dont have backup or numbers of your original IMEI yes it change your numbers

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