android mobile pro-technical n advanced users trying to "save on bandwidth" when is bad zone or congested tower or expensive pay-per-use roaming-data - one option -use a local relay on the tablet/phone itself - arm-linux one. install turmux + relay ! point setting in app / browser only to that relay. 
change setting back highspeed when in good wifi or 5G zone again #tipstr #nostr 

 termux apk 
nostr-relay_v0.0.131_linux_arm64.tar.gz 
nostr-rs-relay (compile for ARM)