A budget or mid-range device cant compare with a flagship Device. But now midarnge devices companies lanunching with 4000 or above batteries and 5.5 above screensizes . A bunch of upcoming mid-range smartphones have 6.3 to 6.9 inch display panels.
But mid-range device cant peoduce such a great processing power and display performance and Camera quality.
eg: A four year old samsung galexy note4
Still performing good with Quad hd display , outstanding camera , and faster processor. And Note 4 keeps the best user replaceable battery design.
When they launched the device its caharged whooping 58300 rupees. Nou you can buy a Note 4 at eBay under 10 to 15 k .
Best thing need to check when buy a used device is , inspect the device in daylight , when phones rear cover is opanable, look for screws , closely look the screws you can see minor scratches in the head of the screw , means the phone is repaired.
Avoid repaired phones , because cheap replacement meterials wont last.
If the phone is holding galss and metal sandwich design closely look for wear and tear . Check the bottom side of the back glass, metal or glass part have minor dents , its the sign the repairman used to open the glass with a prying tool to lift up the glass.
Means it repaired . avoid it .beacuse mainly replaced batteries gonna start trouble.