What to buy? Need advice

Hello guys. Im quite new around here and just have some questions regarding which phone to buy. Im aiming at budget smarphones and am kinda limited with the options here. Mainly because of the reason im a student and cant afford to give huge chop of money straight away,so im leaning back on the carriers in the country I am and their choices/contracts..
Ive been thinking between three phones i could possibly take and are in my availabilty range:
1.Huawei P9 Lite
2.Huawei GX8
3.Xperia XA...

What to buy? Need advice

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