áëèí, âîò çàñàäà!

íî ãóãëü ãîâîðèò:
Ñ510a: GSM 850 / 900 / 1800 / 1900 / HSDPA 850 / 1900 / 2100
C510: GSM 900 / 1800 / 1900 / HSDPA 2100 Mhz
è åùå:
The C510a is North American version which supports the 3G bands (UMTS 850/1900) used in North America. The European/Asian version of C510 does NOT support UMTS 850/1900, which means you will lose the extended coverage of HSPA network.

Íî âñå ðàâíî íåïîíÿòíî - C510a êàê ÿ âèæó ïîääåðæèâàåò âñå ÷àñòîòû, êîòîðûå è ó ïðîñòîãî C510, à íå òîëüêî àìåðèêàíñêèå.
Èëè òàì åùå êàêèå-òî îòëè÷èÿ åñòü?  ëþáîì ñëó÷àå â ðåæèìå "òîëüêî GSM äëÿ òåëåôîíà áåç ïåðåäà÷è äàííûõ" îí æå äîëæåí ïîäöåïèòüñÿ?