I am new in this forum...

My problem:
Call ID can not identity incoming national calls here in Lao PDR, neither landline nor mobil.
International calls are no problem; even SMS is working.

- Iphone 3GS, FW 3.1.3
- all numbers in international format
- local carrier (3G) can not help, advised me to add within the contacts the numbers also without international format (exactly what I do not want to do)

I searched, but could only find solutions for older FW, and for some other countries. With Lao no success yet....

Formats in Lao:
Landline: +856 20 XXXXXX
Mobil: +856 21 XXXXXXX

Can anybody help?