Telecom r22 is a 4" screen with 1ghz and 4.0.4 @ $299 rrp
Downsides 3mp cam, known app to sd issue.
this is the specs
3G UMTS 850, 2100 MHz.
2G GSM 900, 1800, 1900 MHz
so should work on 2D (I think) - although you wont get 3G coverage in rural areas where you roam on vodafone - but 2G will still work.