best i would advice you to go for is a smartphone....preferably a symbian os smartphone and not a blackberry, windows mobile, android or iphone mac os.
Blackberry and iphone cant really be enjoyd in Ghana unless you got ur own wifi hotspot that connects you 24/7. Services on these phones are not available in ghana and there are not any hotspots in Ghana....the few you would find are locked.
And if you sure would really want to make use of your android or wm os based phone, the best thing to do is get your apps on your fon before you get to Ghana. HTC ain gt java and you sure would find it difficult using the phones browser as it is very poor and really takes up loadz of airtime when browsing
symbian based apps have java and can install anything. The Ghana telecommunications facilities work best on simple and popular os aand the best you can list is the symbian ....at least in Ghana so just get a symbiansamartphone.. If you ask me, I would advice you go in for a nokia n97 or any of the Eseries phones.