ZaTelnet Light is a Telnet client for Google Phone. It also emulates terminal VT100 (basically enough for working with Midnight Commander and others console programs).

ZaTelnet Light offers extended opportunities for interface customization, such as full screen mode, different display sizes, 240×240, 240×480, 480×480 and 480×640 screen resolutions, portrait and landscape orientation modes, screen with adjustable size and different font sizes.

ZaTelnet Light boasts a handful of improvements that make remote administration of Unix and other servers via Telnet protocol using mobile devices simpler and more efficient.

http://www.android-freeware.org/download/zatelnet-light