what do you think i should consider before buying smartphone

I only use iPhones. I love its security and that it goes with all my other Apple products. It's also easy to use for me. lol

It should also be considered about the processor, RAM and internal storage.

Consider only what you mainly want to do with your smartphone : an iPhone will have a better camera, a Samsung a better sound, a Huawei a better GPS system, etc.

I think you should look at storage, durability things like that. For me I have an android and I prefer it because everyone i know their iphone always starts having issues when a new one comes out, and its easier to break if dropped. Ive dropped an iphone and had it break across the screen but when I drop an android it still worked fine. I think you should research different kind of phones and different features you require and go from there

I would consider the camera, the storage, the screen.

The best thing to consider is the storage capacity and the speed

you have to look at the quality and affordability of the product.