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As existing numbers run out, the three mobile phone operators are assigned numbers in code 081, distinguished by the first digit of the subscriber number. A mobile phone number consists of a mobile phone code and a seven-digit subscriber number. Therefore, a mobile phone number is written as 0641163685

Mobile phone numbers begin with 6 or 7, followed by 8 digits (6xx xxx xxx or 7yx xxx xxx), where y can be 1 to 9, not 0 (zero). Note, numbers starting with 70 are personal numbers which can be re-directed to any other number by the personal owner.

Mobile phones. In mainland China, mobile phone numbers have 11 digits in the format 1xx-xxxx-xxxx (except for 140–144, which are 13-digit IoT numbers), in which the first three digits (13x to 19x) designate the mobile phone service provider.

Taiwan mobile phone numbers always begin with 09 followed by 8 digits (e.g. 0918909875). The 0 is omitted when calling a Taiwan mobile phone number from outside Taiwan (e.g. +886 970699044). If calling a landline within Taiwan from a local Taiwan mobile phone, the 0 of area code prefix must be included (e.g. 0 + area code + 8 digit landline ...