Samsung a52 for sale. Condition 10/10 8 month warranty. 53k

Anyone give solution. Mobile bilkl normal work kr raha hota. 1 tone khud hi bjna start ho jati h. Us ka koi notification kuch b ni aata. Background pe bs chl rai hoti h. Smjh me ni aa raha k kaha se off ho kis chez ki tone h. Mobile on off krna prta....

Samsung a52 me Pakistan railway ki app install ni ho rai playstore se or kisi or source se b ni ho rai.. kia ye sb ka issue h? Ye issue android 12 ki update k bd aya h.

I have Samsung a52. Android 12 update k bd Pakistan railway ki app install ni ho rai playstore se. Or na hi kisi 3rd party app se install ho rai. kia solution ho skta h?