Hi there am not to tech say but I know a little. Any how I keep getting a Invalid MMI Error code and connection problem code. What does this mean and how do I fix this. I can't call my voice mail by holding down the speed dial number 1. All my contacts have a 1 then area in front of it. I also am having trouble using my WiFi hotspot it says mobile number not found. I originally bought my phone from Verizon and decided
to switch to t-mobile so I had my phone unlocked. Could this be the problem. T.I.A.
Related
I have T-Moble here in the US and updated my Pocket PC Phone edition rom versio 4.00.16 ENG and noticed they have this call barring feature in the phone settings that lets you bar incoming or aout going calls but to activate you have to enter a call barring password does anyone know what it is.
i never used or tried it, but i was told its the last 4 digits of your social securty # or last 4 of your fone #
I tried both abd it didnt work but thanks for the info
I always thought call barring was done through the sim/service provider password.
T-Mobile also uses 1234 as a default password often.
also try 5678
Thanks again people i will try thpse suggestions today
Where did you find a 4.00.xx update for Tmobile? I just checked their site and they still had the old Nov 2002 3.16 code up there.
Thanks,
If you look at the ROM Update section of this forum you will see we have easy access to various 4.00.xx ROM updates.
SIM PIN 1 & 2
Ok, I had an experience earlier this year where one of my t-mobile phones (not the PPC) wanted "Sim Pin 2" to access a feature. I ended up getting my sim pin blocked and called up t-mo support. After a little bit of "Try to get the information out of the dumb support person" I finally had the person ask me "Well, I could give you PUK1 and PUK2, if you think that would help", I said i thought it might, and she gave me the two keys to the kingdom (Along with what SIM PIN 2 was originally, just a random string of number). The moral: Call T-Mobile, tell them you have a feature that you can't unlock and that you think you've screwed up your phone bigtime. If they ask if you want to send it in, say no, that you think you can fix the problem if they give you these weird PUK numbers or PIN numbers. They'll probably just be happy to get you off the phone, and these might be the numbers you're looking for.
Tmobile has a special plan called the "data-only" plan that automatically blocks all incoming or outgoing calls. However, it still allows emergency dialing (911) and 611 calls... Just call a rep and have them set you up with that plan! Everything costs the same...
Hi guys,
I'm starting a new topic because the only information I could find was from 1 or 2 years ago, before Sprint started giving unlock codes after Feb. 2015.
I recently ported my number to T-Mobile and was unable to unlock my device before my service was severed. Now I am stuck in a rut and cannot get service on EITHER network.
After running around all day, trying to get Sprint stores to help, calling customer service, etc... I was finally able to chat with a Customer Service rep, pay my ETF balance (it had not been posted yet, I asked to pay early). After that, the rep gave me the 6 digit unlock code. I tried punching in *#0011# but I cannot access a menu, it just flashes
MENU NOT EXIST
PRESS BACK KEY
CURRENT COMMAND IS 1111
After that it just displays "No service".
The phone did not acknowledge the T-Mobile SIM at all. I did a network restore code (I forget the dial code) and now it says Invalid SIM Card- so, it knows the card is there.
I cannot get it to a point where it asks for the MSL number.
Can anyone please help? I'm tearing my hair out here.
Thanks,
-Tory
If anyone is going through this same problem, please see this thread and my experience doing this manually, starting with post 1456.
Don't despair! It's a huge pain to go through this if you're only a recreational Android user (like me), but it can be done if you do your homework and follow the steps slowly.
Thanks be to the board, and the people on it.
I have a Nokia 6 on the T-Mobile network, I am only using one SIM on this device. Recently whenever I use a short code to check my balance, data usage, etc. I get a "connection error or invalid MMI code" error. When I first got the Nokia 6 it worked fine then it starting giving this error.
I called TMo but they can't figure it out, I rebooted, manually and automatically re-selected the service provider, booted in safe mode. T-Mobile reconnected my device to the network themselves multiple times too, same error.
Yesterday, I found an old Alcatel Android phone which is a single SIM phone, I put my SIM in there and the short codes worked fine. I put the SIM back into the Nokia 6, I got the error all over again.
Does anyone know a fix for this, I am only using only SIM card so the articles and YouTube videos I found were not working as they concerned a phone with 2 SIMs.
Thanks all.
Fixed---sort of
andrm said:
I have a Nokia 6 on the T-Mobile network, I am only using one SIM on this device. Recently whenever I use a short code to check my balance, data usage, etc. I get a "connection error or invalid MMI code" error. When I first got the Nokia 6 it worked fine then it starting giving this error.
I called TMo but they can't figure it out, I rebooted, manually and automatically re-selected the service provider, booted in safe mode. T-Mobile reconnected my device to the network themselves multiple times too, same error.
Yesterday, I found an old Alcatel Android phone which is a single SIM phone, I put my SIM in there and the short codes worked fine. I put the SIM back into the Nokia 6, I got the error all over again.
Does anyone know a fix for this, I am only using only SIM card so the articles and YouTube videos I found were not working as they concerned a phone with 2 SIMs.
Thanks all.
Click to expand...
Click to collapse
Well, someone helped me resolve this (no not Tmo, but it wasn't a Tmo issue). Seems the Nokia 6 no longer switches to HSPA+ mode in order to process the short code (USSD), the workaround is to temporarily toggle the Nokia 6 to 3G, once this is done, the short codes work. I can then place it back onto 4G (LTE).
It used to work, so I am wondering if a recent Nokia update changed this. Not a big deal, I just have to toggle to 3G use the short code, then go back to 4G, a few seconds.
This person stated he had an issue with his LG, and found a setting to allow USSD over IMS in the hidden menu to resolve this so he doesn't have to toggle back and forth. I did not see this option in the hidden menu, so the 6 may not support it.
I've got the Au Carrier version, Model Number "SCV33".
The problem was that the phone came with locked network, but i unlocked it through About>Status>Sim Lock Status by registering my SIM.
The 2nd problem which i cant solve is whenever i try to call someone it keeps giving the options "Set Dialing Destination: To Japan or To Oversees"
Pressing to Japan causes it add the Japan code, and when i press oversees it tells me to enter the code for the country and to do that i have to put the code in front of every number manually or edit each number with the code, that also sometimes doesn't work cause Google sometimes wont remove the original number without the code and will keep calling that one. And there is no "more settings" in call settings, thus no assisted dialing option. I really don't want to root or flash anything.
Also the issue isn't about calling people i can deal with that, problem is i cant put codes e.g *124# *3# etc which are for getting balance info and packages.
Cheers if anyone can help me.
Since the latest update to MiUi 11 Android 10 the call forwarding features on my phone are not working. I've tried menu access and I've also tried dialing in the codes manually.
I get the message "unexpected response from network" using the phone menu or " connection problem or invalid MMI code (0)" dialing the codes.
Does anyone else have this problem, know how to fix it ?
Works on my phone. Contact your operator.