I bought lumia 638 from amazon at the price 5399, in june 2015.After taking many search on internet I bought it from amazon at the best price during that timr.
(ADVANTAGES)
1snapdragon 400
2 1.2 ghz quad core processor
3 play and record easily hd videos
4 responsive touchscreen as claimed by lumia models always
5 cameraa is superb at this price range
6*SUPPORT 3G 4G LTE
this is the main advantage of this model .
(DISADVANTAGES)
1 small screen
2 no front camera
3 on screen buttons
4 sometime didnt find wifi nearer to any wifi system
But if u sre a internet surfer and having 4G avaliable in uur area of AIRTEL.Then use or buy this model its intrtnrt speed is also be double then lumia 630 .is 42.2 mb / sec .so if making a mood to buy a 4G model in the price range of 5000-7000 rupees then buy it if uu doesnt want a bigger screen.
(DESIGN AND BUILD QUALITY)
NOKIA LUMIA638 Is designed as same copy of lumia 630 it has a great potential and strong build quilty that also shown by is brand namrd NOKIA.
CCCC NOKIA NOT BELIEVE IN FEATURES OF MOBILE BUT IN POTENTIAL AND SOFTWARE QUALITY)
Now a days so many 4g phones are avaliable in market but I think it is the brst thats why I can share my experience with you .This is best 4G mobile in tjis catagory.to buy a super fast modern 4g phone.
Otherwise if in your area not a 4G network then pls doesnt buy this model then uu can buy lumia 540 or 640
() BATTTERY BACKUP)
BAttery backup is very very good as the lumia phones main features is the clear black didplay.
Reallly I love the best part of its lumia that is its CLEAR BLACK DISPLAY which is the most important and favourite part of this mobile .
Use now airtel 4g with lumia 638 and buy it from amazon
AMAZON provide this only
Always be care full now after buying pls dont insatalll windows 10 on this lumia before the official release for tjis mobile
This mobile is working graeta no lagging no hanging no any other defect in tge operating system so keeeep updated to uuu always IF your budget is less then 5500 the pls wait still microsoft also released a 4G mobile named as MICROSOFT LUMIA 550 then buy with which comes with the bundle of features .
So keep wainting if uur pocket money is less then 5500 or 5000
THANKS NOKIA AND MICROFSOFT FOR MAKING LUMIA MOBILES