Indoor Cellphone signal boosters

[sox63]

http://www.cellphone-store.com/spot...-booster-for-pcs-1900-mhz-signal-booster.html

I have a question regarding this device:

Would it work with SA networks? VC, MTN, Cell C.

 

[Syndyre]

Its the wrong frequency for SA, SA's 900/1800 Mhz for GSM.