mutasimahmed hey I switched from my OP7Pro to Phone (1) when that first came out, and it was an immediately great decision. Like you, I was facing issues with lag and out of date software, plus I was really suffering with poor battery life. From the moment I got my Phone (1), all of that changed. Instantly, everything was much smoother thanks to NothingOS, it was clean and I could customise it to how I wanted it to be. Battery was then also getting me throughout a day without worry and the camera set up was great.
The one thing that took me a while to get used to was the hole punch front facing camera, as the OP7Pro had a fully uninterrupted screen. However, after a few days using the device you don’t really notice it that much and it just becomes normal.
Since then, I’ve used and owned Phone (1), (2) and (2a). I’m currently using (2a) purely because I wanted to have something light, really cool to look at as well as all day battery life. The performance of (2) certainly out-weighs (2a), but if you’re not a heavy user and just a casual phone person, using the usual multimedia apps (not a mad gamer) then the (2a) will also be more than enough for you. I do a lot of social media, music listening and daily use on my (2a) and can easily get through an entire day, sometimes two, without worrying about battery life.
Hopefully, that helps 😃