So you expect 1080p for 5.3 inch IPS display at Rs 18.5K?
No Android has guarantee of any official updates except the Nexus,for that matter!
And for A7 Vs A9 Headline differences (from a software perspective)
- A7 supports the Virtualization and System Timer extensions to ARMv7, the A9 doesn't
- A9 has hardware coherency management between the different cores in the processor. A7 additionally supports system coherency management (e.g. An A7 + A15)
- A9 MPCpre has a built in interrupt controller based on GICv1, on the A7 the IC is optional and based on GICv2 (mainly adds Virtualization support)
- A9 implements VFPv3, the A7 VFPv4. Basically this means he A7 supports Fused MAC operations, but the A9 doesn't
- A9 has built in watchdog, the A7 doesn't
May seem like a big deal, but mostly these differences would only be important to bare-metal or kernel code.