No. Every keypress is mirrored to my provider and to Google over ipsec and HTTPS tunnels. Fondle-slabs are not for secure transactions. Even turning off all forms of spell checking does not disable this behavior, just reduces it slightly. Most security controls and encryption on cell phones are placebos that can be bypassed with JTAG debugging.

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your problem statement is very vague; keyboard is part of physical security and there is zero expectation of anything being private from keyboard to the messenger app input channel; one way to prune this clear channel and to achieve some level of privacy is to expose a virtual keyboard ui that controlled by the app, and user provides input via mouse clicks.

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