The "IP Mismatch" error occurs when your SIM card's location doesn't match your actual IP address. In 2025, TikTok enhanced its controls: mismatches now prevent SMS code delivery. Here's how to buy a virtual number for TikTok and sync your IP to complete verification. GrizzlySMS delivers codes in 5-7 seconds with 99.9% success rate.
Causes of IP Mismatch
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Using VPN services in a different country than your number's region
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SIM card or eSIM roaming
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Mobile carrier's dynamic IP
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Virtual PBX numbers on TikTok's blacklist
GrizzlySMS Solution
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Connect to VPN in the same country as your virtual number
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Visit GrizzlySMS and select TikTok/Douyin
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Get a number and copy it
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Request SMS code in TikTok
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Receive code within 5-7 seconds and complete registration
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Disconnect VPN after confirmation
Buying virtual numbers for TikTok this way is secure: codes arrive via HTTPS, data gets deleted after 15 minutes.
Common Mistakes & Hacks
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Enabling VPN after requesting code triggers mismatch
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Choosing US number with German VPN causes mismatch again
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Multiple attempts with same number → temporary ban
FAQ
Should I stay on VPN after activation?
Not required, but recommended to maintain same location for first 24h
How many accounts can I create?
We recommend 1 account per number
Do these numbers work for TikTok Ads?
Yes, you can verify business accounts with same number
What if code doesn't arrive?
Change number's country or restart app
Can I use number for Douyin?
Yes, there's separate catalog option
Case Studies
An influencer marketing agency created 100 TikTok profiles for brand campaigns. Using GrizzlySMS, all codes arrived within average 6 seconds.
Conclusion
IP Mismatch error won't stop account growth. Just buy virtual numbers for TikTok, sync IP with number, and complete verification in 5 minutes. 99.9% codes delivered on first attempt.