Oppo new mobile 5g under 20000 July 8, 2019 16 32 64 128 Oppo new mobile launch 2024 5g under 20000 Oppo new launch 5g mobile under 20000 Oppo mobile 5g new model under 20000 Oppo 5g mobile under 20000 curved display New mobile launch 2023 5g under 20000 oppo Mobile phones oppo new model 2024 5g under 20000