Plug a landline into a 3G cellphone?
August 25, 2009 10:39 AM Subscribe
retrofitting 3G networks back down to landlines: My cellphone has a 1.75mm jack for plugging in earbud/wires. Is there RADIO SHACK technology that can let me somehow plug a "landline" into a cellphone? Is there a secret cellphone code that can generate a "dial tone"?