Let us get ton know in detail one by one first lets talk about
1) GETTING BEST PRICE
Check the price of the new phone and then only go and check if the seller is selling you for the best price or not lets say if the original phone price is 15K and the seller has used that phone for 3 years and then selling it for 10K please don;t take that phone because the phone original price is 15K and it was before 3 years which means that phones technology might have been exhausted from the current world of technology.
So buy that phone for around 5K or even less dont get fooled by the seller you have the right to choose the correct phone
2) MOBILE DATA ERASURE
Hey guys this again a very big problem that some of the user dont clean the phone(clean here means not externally but internally which means cleaning the data)
So please check the phones memory before buying a 2nd hand smartphone.
3) OVER ALL DEVICE FUNCTIONALITY
One of the most biggest problem why the users want to sell there old phone is the problem in the device functionality Its my personal request to please check the functionality of the phone if its working properly or not isnt is hanging or lagging too much or not and all that matter
And finally #Buy_Right
Hope this helped you
Thank you