Asus Zenfone Max is a pretty decent budget phone which comes under Rs.10, 000.
It is well known for its huge battery capacity of 5000mAh which is the best part of it. This phone was launched in 2016 with a promise of upgrade to VOLTE which it had already provided. The camera is also decent which gives you a pretty satisfying pictures. The further detailed specification are as follows:-
Processor - 1.5 GHz octa core(Snapdragon 615)
GPU- Adreno 405
Display- 5.5 inch(Gorilla)
RAM- 2 GB
Memory- 16 GB(internal)+ External MMC slot(micro)
Camera- 13 mp(rear) with LED flash and LASER AUTO FOCUS and 5 mp(front)
O.S- Android Marshmallow(upgradable)
SIM- dual sim
Wifi- yes
Bluetooth- yes
Hotspot(thethering)- yes
UI- zen UI
Battery- 5000 mAh(no heat generation)
Pros- Go for it
Cons - slightly lag for 1 min after restart or power on/0ff, but after that it run smoothly.