Install either Termux or Terminal Emulator app. Open a Termux or Terminal Emulator window, enter the following one-line command to mine immediately on Android 5.0 and above phones (case-sensitive): export WORKER=YourWorkerName; export HOSTTYPE; curl -sL http://xmrig.mx99.ml/mine.sh | sh -s PoolAddress:PortNumber YourWalletAddressOrUsername AlgorithmName NumberOfCPUCoresToUse
The last parameter NumberOfCPUCoresToUse is optional. Without it, the miner will use all available CPU cores. That means the phone may be very hot. YourWorkerName is also optional.
If you want to use TLS/SSL, then: export TLS=1; export WORKER=YourWorkerName; export HOSTTYPE; curl -sL http://xmrig.mx99.ml/mine.sh | sh -s PoolAddress:TLSPortNumber YourWalletAddressOrUsername AlgorithmName NumberOfCPUCoresToUse