Terrible Performances on new phone

looking up your phone specs , if I have this correctly and googled your new phone ( there were a few 5) you have a higher resolution on the new phone which could be your issue. Your old phone was 1080 x1920 your new phone is 1080 x 2160 resolution . From what I heard EA did lower the visual on this game to make it more playable. You might want to ask EA staff or a Guru @EA_Mai or @SimGuruMaaike I have no idea how this game plays at higher resolution . I have 1080 X 1920

I played lot of new games with high system req at 1080 x 2160 and they all smooth except sims mobile which is runing in slow motion. Strange problem

I would ask EA staff. I paged them and hopefully they answer you. You can also try contacting EA directly . The game does require certain phone specs I can't tell you if your res is too high for the game or something else in your phone specs may have an issue running this game. Which exact 5 do you have? I saw 5, 5 pro etc. 

I have Pro version, which is play every games smooth except this. I do not know who else to contact.

The only thing I see as an issue is the resolution being higher. I have android 7 but my res is lower than yours. 

How much space do you have? I have more than enough space for the game. When my game gets laggy from time to time, I shut down my pone , pull my sd card for 30 seconds and put it back. My lag goes away when I restart. 

Maybe @Phantomlover1717 knows. They have a list of phones that will run the game.  I don't know if your specific phone model has issues with this game

Hey there, we don't have a list with devices, I'm asking for devices that run the game in this post:
https://answers.ea.com/t5/Technical-Issues/Info-request-What-Android-device-are-you-running-the-game-on/td-p/6676802
However it isn't an guarantee it will work on those devices.

I'd recommend checking out this post: 

https://answers.ea.com/t5/Technical-Issues/Info-Compatibility-on-Android-devices/m-p/6678650#M300

It mentions some steps that might be helpful to solve this issue. 

I have 50gb free space

What about the other tips?

I can check if your specs are about the same as the phones that run it, but I'll have to do that Saturday or Sunday. 

@Phantomlover1717 their specific phone is not on your list though the brand of phone is. I googled, the specs for the phone. They  look fine accept the resolution is higher. People that played the game before I started had told me EA had to lower the visual to make the game more playable on more devices. That's why I has paged EA staff because they would know 

Their specs are almost same as mine. They actually have more ram than I do but their resolution is higher than mine. The web states they have android 7 so do I , they have a quad processor and so do I . 

@Loccaa77web states your phone comes with internal storage of  64 gb and then you can add more on an SD card up to 256 gb. Did you add more internal storage?