In my case, I use Binance very often to trade, but unfortunately, I only use it on my computer and not on my phone. The reason is very simple: the app is not at all user-friendly. When I want to buy an altcoin because I saw that the price will go up, it takes time to process the chart. Then, if I accidentally exit the app, to log back in and see the chart for that altcoin is a headache, it takes a long time. That's why I don't trade on my phone, I just check the prices on my phone. I think the Binance team could improve the app.
I am not experiencing this on my phone. What is that RAM of your phone? Also what is the chipset that it is using? Or if you can let me know the name of the phone, I can easily check the features to know what it can happen. Binanace load fast on my phone and also reload fat even though it is not as fast of Bybit.
One thing I like about Binance is their desktop app which is completely different from the web version. No exchanges has such app that I have seen but I like many exchanges Android app than Binance app.