^\+?[0-9 .\-]{7,20}$
Matches:
✓ +1-555-123-4567
✓ 555.123.4567
✓ +44 20 7123 4567
^\+?[0-9 .\-]{7,20}$ supports various international formats with optional + prefix.Yes, allows + prefix and various separators (space, dot, dash).
Shortest valid phone numbers are 7 digits. Longest (with country code and extension) rarely exceed 20.