It may be time to reconsider your wireless plan. This week, AT&T, Verizon and T-Mobile all launched $99 all-you-can-eat mobile plans. Sprint may yet low-ball them all.

The land-rush to cut prices started with Verizon, with AT&T and then T-Mobile quickly following suit. The deals are mostly the same, though with T-Mobile you also get unlimited text messaging. AT&T and Verizon, though, typically have better data networks, if that matters to you.

Still to come, at least according to some reports, is a still-unsubstantiated move by Sprint to undercut them all with a $60 deal.

Regardless, it may be time to take a look at your recent bills. If you've been going over your current deal several months a year, it may be worth going to a $99 unlimited contract just to normalize your costs and protect you from major problems (for instance, I once got hit with a HUGE text messaging bill when I started using instant messaging on my phone -- I didn't realize each IM was charged as a text message!).

I'd suggest letting things shake out a few weeks and then consider going shopping.

Read more:

Gizmodo: Begun, The Mobile Wars Have

Reuters: Sprint Expected To Undercut Rivals