Android SIM Not Provisioned MM#2: Causes and Fixes

Few things are more frustrating than seeing "SIM not provisioned MM#2" on your Android screen when you're expecting a call or need data. Let's cut through the noise and get your phone working again.

The Quick Fix (Try This First)

Nine times out of ten, a simple restart clears this error. Here's what to do:

1. Power off your phone completely. Not just sleep mode—hold the power button and select "Power off" or "Restart."
2. Wait 30 seconds. This isn't superstition; it gives the SIM and the radio time to fully reset.
3. Power back on and see if the error is gone.

If that doesn't work, try this sequence:

1. Turn on Airplane mode from the quick settings panel.
2. Wait 10 seconds.
3. Turn Airplane mode off.
4. Check if the SIM is recognized. If not, continue below.

If Restarting Didn't Help: Deeper Fixes

When a reboot fails, you're looking at either a SIM card issue, a network provisioning problem, or a software glitch. Let's troubleshoot systematically.

1. Reseat the SIM Card

This sounds basic, but it's the most common culprit. Had a client last month whose brand new Pixel 7 threw this error because the SIM tray wasn't clicked in all the way. Here's how to do it right:

1. Power off your phone.
2. Use the SIM ejection tool (or a paperclip) to pop the tray.
3. Remove the SIM card and inspect it. Look for scratches, dirt, or corrosion on the gold contacts.
4. Wipe the contacts gently with a clean, dry cloth. Don't use water or alcohol.
5. Reinsert the SIM card, making sure it's aligned properly. It should sit flush.
6. Push the tray back in until it clicks.
7. Power on and test.

2. Check if the SIM Works in Another Phone

Pop your SIM into a different phone—any unlocked phone will do. If it works there, your Android device is the problem. If it doesn't, the SIM itself is likely dead or not provisioned on the carrier's end.

3. Clean the SIM Reader Contacts

If the SIM works in another phone, the issue might be your phone's SIM reader. With the phone off and the SIM tray removed, look inside the slot. You might see dust or lint. Use a can of compressed air (hold it upright) to blow out any debris. Don't stick anything metal in there.

4. Reset Network Settings

This wipes saved Wi-Fi passwords and Bluetooth pairings, so be ready to reconnect those. It also resets APN settings, which can fix provisioning errors.

1. Open Settings.
2. Go to System > Reset options (on stock Android; on Samsung it's General management > Reset).
3. Tap Reset Wi-Fi, mobile & Bluetooth or Reset network settings.
4. Confirm and let the phone reboot.

5. Manually Set the APN

Sometimes the carrier's provisioning data gets corrupted. You can manually enter the APN (Access Point Name) settings. You'll need the correct APN details from your carrier's website.

1. Go to Settings > Network & internet > Mobile network > Advanced > Access Point Names.
2. Tap the + icon to add a new APN.
3. Enter the APN settings exactly as provided by your carrier.
4. Save and select the new APN.

If you're not sure what to enter, search "[carrier name] APN settings" on your computer—don't guess.

6. Update Your Phone's Software

Carriers sometimes push provisioning fixes via software updates. Check for updates:

1. Settings > System > System update.
2. If an update is available, install it.

7. Try a Different SIM Card

If you have a spare SIM from the same carrier (or a different one), pop it in. If that SIM works, your original SIM is the problem. You'll need a replacement from your carrier.

8. Contact Your Carrier

If none of the above works, the problem is on your carrier's end. The SIM might not be properly provisioned in their system. Call support and ask them to check the provisioning status of your SIM and IMEI. Sometimes they need to push an OTA update to your SIM.

Why This Error Happens

"SIM not provisioned MM#2" means your phone can't read the provisioning data stored on the SIM or in the carrier's network. Provisioning is what ties your SIM to your phone number and plan. Without it, the phone can't authenticate on the network.

The MM#2 code is a specific error from the modem firmware—it's telling you the SIM isn't properly initialized. This can happen if:

• The SIM card is loose or dirty.
• The SIM has been deactivated by the carrier (e.g., unpaid bill, plan change).
• The phone's software has a glitch in how it reads the SIM.
• The SIM is damaged.
• You're in an area with no coverage, and the phone can't complete provisioning (rare, but possible).

Restarting or reseating the SIM often works because it forces the phone to re-read the SIM and re-register on the network.

Less Common Variations

Error Appears After a Carrier Switch

If you just switched carriers and kept your phone, the APN settings might still be locked to the old carrier. You'll need to update them manually or contact the new carrier for help.

Error After a Factory Reset

A factory reset can sometimes wipe the provisioning data. If you just reset your phone, you might need to reinsert the SIM and let it sit for a few minutes to re-provision.

Error on Dual-SIM Phones

On dual-SIM phones, one slot might be misconfigured. Try swapping the SIMs between slots to see if the error follows the SIM or the slot.

Error with eSIM

If you're using an eSIM, the fix is different. You can't reseat it. Instead, try deleting and re-adding the eSIM profile. Check your carrier's app or website for instructions.

Prevention

Once you've fixed the error, here's how to keep it from coming back:

• Handle the SIM carefully. Don't touch the gold contacts with your fingers. Oils can cause corrosion.
• Keep your phone's software updated. Updates often include modem firmware fixes.
• Don't switch SIMs while the phone is on. Always power off before removing or inserting a SIM.
• Back up your APN settings. Take a screenshot of your working APN settings so you can restore them if they get wiped.
• Contact your carrier if you're switching plans. Make sure they provision the new plan correctly before you rely on it.

Most of the time, this error is a quick fix. If you've tried everything and it's still not working, your SIM card might be physically damaged or deactivated. A trip to your carrier's store is your next step.