This 3G phone came to replace my Samsung B2100 SOLID indestructible.
It is generally better and the screen is larger and of better quality.
Further improved battery life (almost two weeks)
Really works best with a micro-SDHCde Class 10 card (I use the Transcend 16GB MicroSDHC Memory Card TS16GUSDHC10E)
Only remarks
1-The light that turns on its own, it is an excellent product.
2-The charger cable is really late (I took another charger better quality and same values at Samsung)
3-The GPS unfortunately requires an unlimited subscription (Google maps) but is useful for its position to communicate with the emergency.