If your budget is 15 thousand taka or around it. It is not possible for me to go above 15 thousand taka. Then the phones that I will talk about now can be the best for you. What if your budget is low? You can get good phones with this low budget. If the budget is low, the phones have some bad sides. But the phones that I will talk about today. These phones have very few bad sides. Every phone here is official. You will get every phone in the Bangladesh/India market. Branded phones here.
Top 5 best smartphones under 30,000 in Bangladesh 2025

Display: 6.7 inches PLS LCD (720 x 1600) Display
Main Camera: 50 MP, f/1.8, (wide), and 2 MP, f/2.4, (depth)
Front Camera: 8 MP, f/2.0, (wide)
Memory: 4GB 128GB / 6GB 128GB
Battery: 5000 mAh

Display: 6.75 inches PLS LCD (720 x 1600) Display
Main Camera: 50 MP (wide), and auxiliary lens
Front Camera: 5 MP, f/2.0, (wide)
Memory: 4GB 128GB
Battery: 6000 mAh

Display: 6.88 inches PLS LCD (720 x 1640) Display
Main Camera: 50 MP, f/1.8, (wide)
Front Camera: 8 MP, (wide)
Memory: 6GB 128GB / 8GB 128GB
Battery: 5100 mAh

Display: 6.67 inches PLS LCD (720 x 1600) Display
Main Camera: 50 MP, (wide)
Front Camera: 8 MP
Memory: 4GB 128GB / 6GB 128GB / 4GB 256GB / 8GB 256GB
Battery: 5000 mAh

Display: 6.61 inches TFT LCD (720 x 1604) Display
Main Camera: 50 MP, f/1.8, (wide), QVGA, (depth)
Front Camera: 5 MP, f/2.2, (wide)
Memory: 6GB 128GB / 6GB 256GB / 8GB 256GB
Battery: 5300 mAh
There are better phones available at this price point.