The first few digits of the general Linyi mobile phone number

The first three digits are number segments, and those for mobile include 134, 135, 136, 137, 138, 139, 147, 150, 151, 152, 157, 158, 159, 182, 183, 187, 188.

The next 4 digits indicate the region to which they belong. There are many. Generally, those with 539 or 0539 must be from Linyi.