All plans include unlimited data at 128kbps; high-speed data is capped at 8mbps.
Cricket's middle and upper plans include unlimited international texting, as well as free voice, text, and data (up to half of your high-speed bucket) roaming in Mexico and Canada.
You can get discounts when you add lines to your account. First line you add is $10 off, second one is $20, third one is $30, and fourth one is $40.
You can also get a discount when you use auto-reload.
Cricket doesn't support tethering.
Generally speaking, Cricket is the best bang for your buck.
GoPhone's middle and upper monthly plans include unlimited data at 128kbps; high-speed data is capped at whatever the technical limitation of your connection is.
Those two plans also have Rollover Data, where your unused high-speed data will rollover for a one-month billing cycle.
Those two plans also have unlimited international texting.
The upper plan also includes free voice, text, and data (up to half of your high-speed bucket) roaming in Mexico and Canada.
MSV has data overages. No unlimited data at 2G speeds.
MSV is comprised of a data bucket rate and a per-device charge.
Smartphones are $40 each per month with a two-year contract.
Smartphones are $25 each per month without a two-year contract (Next, No Commitment, or BYOD) if the data bucket is less than 10GB.
Smartphones are $15 each per month without a two year contract (Next, No Commitment, or BYOD) if the data bucket is 10GB or greater.
Those two plans also have Rollover Data, where your unused high-speed data will rollover for a one-month billing cycle.
If your data bucket is under 10GB, buying on-contract is the better deal. If your data bucket is over 10GB, then avoiding contracts is the better deal.