It is quite common for Android users to face a connection problem or the invalid MMI code on their devices every so often. This can be really annoying because it simply means that you won’t be able to send any text messages or make any calls until this error is fixed.Feb 16, 2021
Why is my phone saying invalid MMI code?
While country cell phone providers vary, invalid MMI code error is usually found on dual SIM smartphones. The error pops up when the provider has some problems on the network or when there are SIM authentication issues.
How do I find my MMI code?
MMI codes are entered like telephone numbers to obtain a variety of information as well to enable and disable various actions. For example, entering *#06# on a GSM phone displays the model and serial number (see IMEI).
What is MMI code in Samsung mobile?
Every code that you enter over your phones keypad that contains asterisk (*) or hash (#) characters is an MMI code. MMI stands for Man-Machine-Interface. Even though most of these MMI codes look pretty similar, they fall into different groups with completely different actions.
What does *# 21 do to your phone?
We rate the claim that dialing *#21# on an iPhone or Android device reveals if a phone has been tapped FALSE because it is not supported by our research.
What happens if you dial *# 61?
Each item is either enabled or disabled. Dial *#61# and tap Call to show the number for voice call forwarding when a call is unanswered. Also show the options for data, fax, sms, sync, async, packet access and pad access.
What is the code to check mobile number?
Using USSD codes
Here’s is the USSD code for Airtel, BSNL, Jio, and Vi to look for your mobile number: Airtel- *282# BSNL- *222# Jio- *1#
What is the code to check SMS balance in idea?
USSD Code to Check SMS Balance in Idea
Just dial *451# or *161*1#.
What happens if you dial *# 31?
If you want to hide the caller ID dial *31# and press call button. This code allows you to check which number your phone is currently forwarding calls to when you’re busy or reject a call.
What is the master code to unlock any phone?
Phones don’t have a single master pin to unlock them as each is different to the phone according to what the person makes it when they set it up. Often times they can have a SIM pin that is default to 0000 or 1234 but that is the SIM cards pin and can be changed by the user.
What happens when you call ## 002?
##002# – If your voice call or data call, or SMS call has been forwarded, dialling this USSD code will erase them. *#21# – By dialling this USSD code, you would get to know if your calls have been diverted somewhere else or not.
What is * 73 on your phone?
Call forwarding is disabled by dialing *73. This feature requires a subscription from the telephone company. Also available in some areas is Remote Access to call forwarding, which permit the control over call forwarding from telephones other than the subscriber’s telephone.
Can you tell if someone is tracking your phone?
Device malfunctioning – If your device has started to malfunction all of a sudden, then chances are that your phone is being monitored. Flashing of a blue or red screen, automated settings, unresponsive device, etc. could be some signs that you can keep a check on.
What is this code * * 4636 * *?
Android code: *#*#4636#*#*
This code will open up a menu that shows information about your phone’s data usages. Here’s how you can retrieve deleted text messages on your iPhone.
Is my phone hacked code?
After you discover your phone was hacked, you can take this number and file a police report. Just enter *#06# code utilizing the dialer pad on your device. Your IMEI number will appear, and there is a necessity to save this number in a secret place so nobody can know it.
Can you tell if someone hacked your phone?
If you find apps you haven’t downloaded, or calls, texts, and emails that you didn’t send, that’s a red flag. A hacker may have hijacked your phone to send premium-rate calls or messages or to spread malware to your contacts. Similarly, if you see spikes in your data usage, that could be a sign of a hack as well.
How do I change my default SMS Sim on Android?
Go to [Settings] > [Mobile Network] / [Dual SIM & Mobile Network] / [Dual SIM & Cellular] / [SIM Card & Mobile Data]. Under DEFAULT CARD SETTINGS, tap [Call] / [Calling], then tap your preferred SIM to set the default SIM for calls.
What does * 77 do on your phone?
Anonymous Call Rejection (*77) stops calls from people that use a blocking feature to keep their name or number from being displayed. When Anonymous Call Rejection is turned on, callers will hear a message telling them to hang up, turn off the blocking feature, and call again.
What does * 57 do on a cell phone?
Malicious caller identification, activated by Vertical service code Star codes *57, is an upcharge fee subscription service offered by telephone company providers which, when dialed immediately after a malicious call, records meta-data for police follow-up.
What does * 82 do on a cell phone?
You can also use *82 to unblock your number in case your call gets rejected temporarily. Some providers and users will automatically block private numbers, so using this code will help you bypass this filter. Blocking your number can go a long way in stopping annoying robocalls.
What is the master unlock code for a Samsung?
Turn your Samsung device on after inserting the SIM card Type *2767*688# and press Exit. Turn your phone off and insert any other SIM. Turn on and type the code – 00000000. Now your phone is unlocked for other SIM cards.
What is Samsung hidden menu?
There’s one menu you likely aren’t aware of, though, and that’s because Samsung has it hidden: the diagnostics menu. Unlike the rest of the phone’s various settings and features, the diagnostics menu sports a very basic interface and was designed for technicians servicing Galaxy handsets, not for the average consumer.
Is someone watching me from my phone?
The following signs may indicate that someone is using your phone’s camera to watch you: Suspicious background apps. Camera misbehaving. Odd files and inexplicably low storage space.
How do I block my phone from being tracked?
On Android: Open the App Drawer, go into Settings, select Location, and then enter Google Location Settings. Here, you can turn off Location Reporting and Location History.
How do I change my SIM card settings?
To set default SIM for calling in Android smartphones, tap on the settings options and navigate to Network & Internet or Wireless & Networks. Under the option, open the dual SIM settings of your smartphone. In the menu, you will get the option to select a specific SIM when you make a call.
How do I get to SIM settings on Android?
Step 1: Open the Settings app on your android device. Step 2: Click on the connections option. Step 3: On the connections page, click on the SIM card manager option. Step 4: In the SIM card management page or simply SIM Card settings for Android, you will see a Preferred SIM card section.
What is * 70 on the phone?
*70 – Places your call on hold so you can answer another. *72 – Forward your call to another phone number. *77 – Blocks calls from anonymous/private callers.
What does * 89 do on the phone?
*69 to dial the last caller. *89 to cancel a Call Return request. *66 to monitor a busy line and inform you when it’s free. *02 to permanently turn the Busy Call Return service on or off.
How can I tell if I’m being tracked?
If you think your phone is being tracked, there’s one way you can check. Simply turn off your Wi-Fi and turn on your phone’s cellular data. Then notice if there’s an unusual spike in your phone’s data usage.
What does *# 9900 do on Android?
Open the phone dialer, dial *#9900# and select the 2nd option “Delete dumpstate/logcat” in the prompted menu. Select ok to ‘Delete Dump’ and hit exit. This will restore heaps of storage space by deleting all the log files in the device memory.