Thank you very much for your suggestion. Your suggestion has been communicated to the developer and the development project manager is reviewing the content. After reviewing your suggestions, we will apply them to the official version if your proposal matches our concept. We appreciate your contribution to the beta program.
One UI Beta Team
Please consider this so all devices locked, unlocked, carrier independent. This was also brought up during the UI 4 and 4.1 betas but so far no progress seems to have been made on this.
Or if not possible what about releasing the ONE UI customized version of google messages for any newer devices say S10 or newer via the galaxy store.