My wife's iPhone 4 (3G) is beginning to grow long in the tooth and gets flaky at times. Since we have ditched our landline 4 years ago for cell phone(s) only her device needs to be reliable. We both have unlimited data, hers 3G, mine 4G and I'm convinced that if she had a 4G capable device her data usage would go up. Currently I use more than 4GB of data monthly and she uses about 1.2GB of 3G data.
Here comes the question:
If I purchase an iPhone 5 at full retail price will it force loss of unlimited data when I try to activate it on her 3G data line?
Obviously we are currently month to month costumers to keep unlimited data. She gets frustrated with the slow 3G data on her phone when she sees the throughput I get on my 4G device. She either uses our home PC or asks me to look for her in those instances.