This is the term used for a "sudden death" of your phone. It becomes virtually useless...unless you want to use it as a brick. This risk still exists even when done by a professional. The odds are lower than if you ask your geeky roommate to do it, sure, but it's still there. Makes logical sense -- you abandon your carrier, they abandon you. However, if you go to a retailer and they do it for you (which is an option), your warranty may stay intact (depending on your circumstances, of course). If you're flashing to Boost or Cricket, you shouldn't have a problem. But flashing to a behemoth like Verizon could pose some issues -- they approve of fewer "at-home" remedies such as this. When you're working with a CDMA phone, whether it's flashed or not, you'll still be relying on CDMA technology. If you live in the US and travel a lot, most phones in other countries are of the GSM variety (i.e., have a sim card). The main benefits of flashing your phone are in saving money and supporting the littler guys. All carriers within the US with the exception of AT&T and T-Mobile use CDMA technology. Their numbers (ESN) are hard-wired and cannot be changed, unlike their GSM peers. You need to replicate your phone's ESN to do this, thus cloning it. Having two phones with the same number is obviously fishy and is a crime that could lead to some hefty fines or more. If you are contemplating Straight Talk, see their website and talk to a professional beforehand.
याद रखें कि आपका फोन "ब्रिक" (Brick) हो सकता है: याद रखें कि यदि आपके फोन की वारंटी है, तो वह फ़्लैश करने पर खत्म हो जाएगी: सुनिश्चित करें कि जिस नेटवर्क पर आप अपने फोन को फ़्लैश करना चाहते हैं, वह बाहरी ESN को स्वीकारता है: यह समझें कि आप अभी भी उसी तकनीक का उपयोग कर रहे हैं: अपने फोन को Straight Talk पर फ़्लैश करना अवैध है: