AT&T APN proxy?

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Coming from Sprint, the Epic 4G had a proxy configuration in the stock setting that I assumed monitored and filtered traffic from the wireless radio. I have had no side effects with my previous phone after deleting the proxy address.

My question is:

Will deleting AT&T's "wireless.cingular.com" proxy setting alter the performance of my phone?

Proxy is for the benefits of carrier, not consumer. Yes, you can delete it without issues. But out of box, the phone is configured to use 'phone' apn without a proxy. There is also a wap apn with proxy but that is only used for mms and GPS supl data. Neither are editable.

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