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An ESN is the '''E'''lectronic '''S'''erial '''N'''umber assigned to your iPhone and is used with CDMA phones. The ESN has been tied directly to the phones with CDMA carriers such as Verizon Wireless and Sprint. With the introduction of 4G service, a sim card has now been introduced, however, there remains an ESN tied directly to the phone itself in addition to a number on the sim card.An ESN is the '''E'''lectronic '''S'''erial '''N'''umber assigned to your mobile phone and is used with [[CDMA phones]]. The ESN has been tied directly to the phones with CDMA carriers such as Verizon Wireless and Sprint. With the introduction of 4G service, a sim card has now been introduced, however, there remains an ESN tied directly to the phone itself in addition to a number on the sim card.If you are a Verizon customer, and your Verizon phone is stolen, the moment you report the theft to Verizon the phone will be flagged so that the ESN becomes bad. The thief will not be able to use your phone on the Verizon network nor cause regular charges against your account once the phone is reported stolen. If the thief sells the phone, any potential buyer will not be able to activate the phone on the Verizon network. If you are a Verizon customer and your Verizon phone is stolen, the moment you report the theft to Verizon the phone will be flagged so that the ESN becomes bad. The thief will not be able to use your phone on the Verizon network nor cause regular charges against your account once the phone is reported stolen. If the thief sells the phone, any potential buyer will not be able to activate the phone on the Verizon network. === Comments by Verizon Wireless Support ===When a Verizon customer has an unpaid balance, but the outstanding balance has not existed long enough for the account to go into collection status, the ESN number will not be, as of yet, flagged as "BAD." The ESN will be in a status where it is still not usable by anyone other than the original owner. If you purchase a used Verizon phone that comes from an account holder with an unpaid balance that is relevantly recent you will still not be able to activate the phone on your account even though the ESN is not yet officially bad.In one example where Verizon customer support was contacted about a Casio phone purchased from eBay, an account representative with Verizon explained that the phone did not yet have a bad ESN, but the previous owner had a balance due over $1000. The account had not yet went into collections. Once the account was turned over to collections, the phone ESN would be flagged as bad. However, the distinction is an academic one since either way the new owner of the phone will be unable to activate the phone unless he or she is willing to pay the outstanding balance owed by the previous owner. The phone in the example was verified as not having been stolen because a stolen phone would immediately have the ESN flagged bad and there would have been notes indicating to the Verizon representative that it was a stolen phone. By calling Verizon support you can have the ESN checked to see if it is CLEAR, tied to another customers account, or flagged BAD.* CLEAR - no longer tied to another account, no unpaid balance and ready to activate by the new owner* NOT BAD, TIED TO ACCOUNT - still actively tied to another customer's account because there is an unpaid balance due, yet the account is not in collection status.* BAD - The phone has been reported stolen or the previous owner had an unpaid balance that has been overdue for long enough the account as been turned over to collections.=== Flashing ====== flashing ====== Logic Board ====== bad ESN IMEI cleaning service for USA Verizon Network === It’s also possible to obtain a new ESN by changing the logic board, but more often than not, a new logic board can cost as much as a brand new phone. One example where changing the logic board can be economical is the case where your phone with a good ESN has a damaged screen and is no longer useful. You purchase an identical model that is not damaged, but had a bad ESN. You can use the logic board from your phone with the broken display in the phone with a good display. Since phones with a bad ESN sell used significantly cheaper, it might be a good way to get your favorite phone back with less expense. === Bad ESN IMEI Cleaning service for USA Verizon Network ====== logic board ===It’s also possible to obtain a new ESN by changing the logic board, but more often than not, a new logic board can cost as much as a brand new phone. One example where changing the logic board can be economical is the case where your phone with a good ESN has a damaged screen and is no longer useful. You purchase an identical model that is not damaged, but had a bad ESN. You can use the logic board from your phone with the broken display in the phone with a good display. Since phones with a bad ESN sell used significantly cheaper, it might be a good way to get your favorite phone back with less expense.==== logic board swap expanded ====This is the most useful way for a technical person to get a phone with a bad ESN going on the Verizon Network once again. It involves using a broken parts phone to salvage a functional board with a clean ESN and installing it in the phone with a bad ESN, thus producing an amalgamation of the two phones, working, and with a clean ESN. This is both legal, and ethical, as long as the parts being used are not from stolen phones.Remove the logic board from a damaged or otherwise non functional Verizon phone and place it in a fully functional phone of the same model, series, and manufacture revision which formerly had a bad ESN. Discard the logic board associated with the bad ESN. Good candidates for salvaging a logic board from are phones with broken displays but are otherwise functional. Bad candidates are phones with water damage, keep this in mind when shopping for a parts phone. Remember, the parts phone must have a clean ESN. You can still check the ESN status without necessarily having a functional parts phone.Some Android phones and smart phones have extraordinary cameras and make excellent video recorders. hones with good lenses and high megapixel counts can be used solely as portable cameras. Most phones today have Wi-Fi capability and can be used for a variety of things. There are free online services that allow people to send text messages and make calls over the Internet.Some Android phones and smart phones have extraordinary cameras and make excellent video recorders. Phones with image sensors and high megapixel counts can be used solely as portable cameras. Most phones today have Wi-Fi capability and can be used for a variety of things. There are free online services that allow people to send text messages and make calls over the Internet.Not everyone wishes to root an Android phone, and not all models have a root option available. Another alternative for using the Android device on your home LAN is to install ES File Explorer (see [[Android_Apps#ES_File_Explorer]]). This is an app you can get from Google Play that will allow you to connect to other LAN shares, such as a desktop share, server, or NAS device. You cannot share the Android as a LAN drive with ES File Explorer, you can only do that if you root the phone and install Samba.Not everyone wishes to root an Android phone, and not all models have a root option available. Another alternative for using the Android device on your home LAN is to install [[ES File Explorer]]. This is an app you can get from Google Play that will allow you to connect to other LAN shares, such as a desktop share, server, or NAS device. You cannot share the Android as a LAN drive with [[ES File Explorer]], you can only do that if you root the phone and install Samba. == Ensure the ESN is Clear when you Sell Your Own Verizon Phone == If you wish to sell your Verizon phone there are a few steps you can take to ensure that the phone is eligible to be activated by another Verizon user. * Activate another phone on your account tied to your phone number so that the phone you want to sell is no longer actively tied to a number.* Make sure your account is current, that you do not owe any money past your billing due date.* Do not report your phone lost or stolen if you wish to sell it. For your own protection you should also factory reset the phone, clear all personal data, and remove any data storage cards. If your phone is a 4G phone you should not sell the SIM card with the phone. Keep your SIM card. The new owner can get a free SIM card from Verizon.