I would accept Carrier customization with 3 rules: 1. Carrier custom programs should not replace any original built in programs... 2. Carrier custom themes, images, sounds, etc...should be deleteable... 3. Crippling of any kind shouldn't be allowed...
Certain mobile phone features are dependent on the capabilities and settings of your service provider’s network. Additionally, certain features may not be activated by your service provider, and/or their network settings may limit the feature’s functionality.