Unique Phone Numbers
Validate mobile numbers locally and remove duplicates in first-seen order.
Runs in your browserEvery computation happens in your browser — your data never leaves this device.
Phone list
Unique phones
Unique valid numbers in first-seen order.
Enter phone numbers to deduplicate
Input: 0 · Valid: 0 · Unique: 0 · Removed: 0 · Invalid: 0
What this tool does
- Remove duplicate mobile numbers.
- Deduplicate before importing contacts.
- Check phone formats locally.
Example
Input
13800138000 13912345678 13912345678
Output
13800138000 13912345678
Only valid 11-digit mobile numbers are output, with the first normalised occurrence kept.
Frequently asked questions
Which duplicate is kept?
The first occurrence is kept.
Are invalid numbers output?
No, they are counted as invalid.
Are hyphens supported?
Yes, output is normalised to digits.
Keywords：手机号去重phoneunique