Android back up suggestion

Problem/Goal: Apple po main device ko and yung lumang s10+ ko ay pa give up na (may mga lines na sa screen and basag na din). I think anytime shashutdown na sya lol.

Reason na gusto ko pa din ikeep yung android is nandun po kse mga text messages ng father ko nung buhay pa sya (pwede ma migrate yung messages) and also maggamit ko din pang hotspot pag emergency situation (freelancer here). Baka may marecommend kayo na good back up phone na reliable yung battery life and maganda sumagap ng signal. Pass po sa tecno at infinix, meron ganun pinsan ko nasira po agad - no offense.