Apple Peel 520 Overseas Supported SIM card List

Singapore: 
1. SIM card compatibility:
Below SIM cards are tested successfully.
A.1. Singtel prepaid SIM card (2G and 3G)
A.2. Singtel postpaid SIM card (2G and 3G)
A.3. Starhub postpaid SIM card (2G and 3G)
A.4. Starhub prepaid SIM card (2G and 3G)

M1 SIM cards are tested failed.
B.1. M1 prepaid SIM card
B.1. M1 postpaid SIM card

Malaysia:
A.1. Maxis SIM Card from Malaysia (Prepaid and Postpaid)
A.2. Cellcom
A.3. Digi

USA:
A.1. T-mobile in USA
A.2. AT&T

Canada:
A.1. fido
B.1. windmobile (but roaming because no aws band in the 520)

germany
o2 (ask for a pin witch i know but seems working, got signal but could not test as simcard is not activated)

Argentina:

"Personal" and  "Movistar" SIM card Do NOT work.

Old "CTI" (now "Claro") SIM Card works.

New Zealand
2 degree(sim card) prepaid, WORKS

Vodafone sim card dose NOT work

Slovenia
The old Simobil (Now Simobil/Vodafone) SIM card works just fine

Spain
Works perfectly on spanish telecoms (Orange, Simyo and Masmovil sucesfully tried).

If you like please share your successful and unsuccessful story here, If the above is wrong please indicate.  thanks.