Even Wozniak (Apple Founder) has iPhone 4 issues. His solution, carry an extra phone

[aaho]

@teggy

Apple is, and will be giving out free Phone Cases (which apparently fix the reception issue) to anyone who asks for it. Additionally, you can return yours, if it’s within 30 days and incur no restocking fees.

I doubt that it will fix. More over it may get a bit bulkier than HTC EVO