This article was previously accompanied, for illustrative purposes, by a photograph of an Elsafe Infinity I model safe. The primary supplier of this model, Assa Abloy Hospitality Ltd, has asked us to make clear that Elsafe safes do not use master codes and have a much higher level of security over-ride. The issue highlighted in the article therefore does not apply to Elsafe products. We are glad to clarify matters. 15/5/18
In interviews at major CPG companies around the world, we asked dozens of marketing and growth executives about this new reality. Their answers were clear: fulfilling an ambitious growth mandate requires a marketing agenda that is far more sophisticated, predictive, and customized than ever before. It requires a different playbook with new approaches and tools that few have yet to fully master. While broad reach, powerful, resonant storytelling, and creativity remain critical, marketers now need to utilize data and analytics at scale to crack the code that enables more targeted and engaging interactions to shape consumer behavior.
Aim Master crack unlock code and serial
A SIM lock, simlock, network lock, carrier lock or (master) subsidy lock is a technical restriction built into GSM and CDMA[1] mobile phones by mobile phone manufacturers for use by service providers to restrict the use of these phones to specific countries and/or networks. This is in contrast to a phone (retrospectively called SIM-free or unlocked) that does not impose any SIM restrictions.
A handset can be unlocked by entering a code provided by the network operator. Alternative mechanisms include software running on the handset or a computer attached to the handset, hardware devices that connect to the handset or over-the-air by the carrier. Usually the unlock process is permanent. The code required to remove all locks from a phone is referred to as the master code, network code key, or multilock code. If the phone is network locked it will typically display one of the following messages: SIM network PIN blocked, Enter lock PIN.
The unlock code is verified by the handset and is generated by the manufacturer, typically by an algorithm such as a one way hash or trapdoor function. Sometimes big telecom providers change the original factory unlock codes as an extra layer of security against unlocking services. For various big brands such as Samsung and Motorola there is no algorithm but just a random code generator where the unlock codes are programmed in the phone itself and then saved in a big database managed by the manufacturer. For the other brands where the unlock codes are still based on algorithms those are based on the IMEI number and the MCC code and have been reverse-engineered, stolen or leaked. Some handsets can be unlocked using software that generates an unlock code from an IMEI number and country and operator details using the algorithm specific to the handset. Other manufacturers have taken a more cautious approach, and embed a random number in the handset's firmware that is retained by the manufacturer and the network on whose behalf the lock was applied. These handsets can still be unlocked by online services that have access to either inside people with the manufacturer or with the telecom networks, or they need to be connected to the computer with a cable where specific software will bypass the security and SIM-unlock the phone. Sometimes this is done by advanced calculations to bypass the security the official way and other times using exploits or overwriting parts of the firmware where the lock status is kept, and often even recover a phone that is bricked or completely damaged in the software sense.
Most handsets have security measures built into their firmware that protects them from repeated attempts to guess the unlock code. After entering more than a certain number of incorrect codes the phone becomes frozen. This is a state where the phone will display a security message that the phone needs a service. Older phones could no longer be used at all at this point, however modern smartphones often keep working with the original SIM but require extra work to then unlock them correctly. In extreme situations physical access to internal hardware via in-circuit debugging may be utilised (for example, via JTAG headers on a circuit board). Such access may be required to modify initialization software used for booting.
A hardlocked phone is one in which a telecom provider has modified the firmware on the phone to make it impossible to manually enter the unlock codes in any way. The only solution to SIM-unlock such a phone is to change the firmware to a firmware which has not been modified by any telecom provider, a so-called "unbranded firmware".
Handset manufacturers have economic incentives both to strengthen SIM lock security (which placates network providers and enables exclusivity deals) and to weaken it (broadening a handset's appeal to customers who are not interested in the service provider that offers it). Also, making it too difficult to unlock a handset might make it less appealing to network service providers who have a legal obligation to provide unlock codes for certain handsets or in certain countries.
Nevertheless, the fundamental principle of GSM and its successors, is open interfaces which encourage competition among multiple vendors. This is the reason a mobile phone is, in fact, a combination of phone and the subscriber identity module (SIM). Locking the phone to a network is not much different from having the SIM built into the mobile phone. Network operators in many industrialized countries are not bound by law to give the phone unlocking code to subscribers even after the expiry of the contract period. Mobile phones with multiple SIM cards are quite common in India. Most phones sold in the UK are network locked and single SIM but SIM-free phones are available.[11]
Some companies offer an online unlocking service. This service requires that individuals who wish to unlock a handset provide their IMEI number and sometimes also country and operator details to the company, either via email or a web site. The company will then provide the unlock code for the handset. For some brands such as Nokia and Samsung various services also offer special remote-unlocking software with instructions, where a cable is needed to remove the SIM lock at home. Such companies may email the unlocking code or software which will remotely unlock the device. Some companies also offer unlocking services that require sending the handset's IMEI number. Other companies sell unlocking hardware, including devices which fit between the SIM card and the phone to spoof the original network identifier during registration and devices to read and edit the handset's firmware. The pricing for unlocking a device will vary depending on the network it is locked to and the handset model itself, as each unlock code is unique to each individual handset.
There are online services that will provide an IMEI unlocking service for DCT4 and DCT3 Nokia mobile phones.[citation needed] This method of unlock requires the user to know which carrier the mobile phone is locked to, and also needs to provide an IMEI. Generally, older model Nokia unlock codes are free and instantly retrievable by these services. The unlock codes retrieved must be entered into the mobile phone using the keypad.
For DCT4 and DCT3 Nokia, unlock codes consist of a "#" key, followed by "pw+", 10 (DCT3) or 15 (DCT4) digits, "+", and another number ranging from 1-7, and finally ends with a "#". Depending on the carrier which the phone is locked to, only some codes will work with the mobile phone. Most phones respond to the unlock codes ending in +1# or +7#, however some phones are configured to allow only one of the seven codes to work. The following is an example of a DCT4/DCT3 unlock code:
DCT4 and DCT3 Nokia will only allow a maximum of five unlock attempts using the unlock code method. After five incorrect codes have been inputted, the phone will not allow the user to try any more codes (even if it is correct) and will require the owner to try other unlock methods.
In Croatia, for devices bought on contract, the mobile operator must provide the unlock code on the user's request free of charge. Such request can be made immediately after buying the phone, and the operator has a 15-day period to fulfill the request. For devices bought on a prepaid plan, the user has to wait at least 12 months before submitting such request.[29]
In Germany, there does not appear to be any effective law regulating SIM locking. For example, the iPhone was initially offered for sale in Germany exclusively through T-Mobile, and it was locked to T-Mobile's network. They began to provide unlocking codes for that phone after they were sued by Vodafone and a temporary injunction was issued requiring T-Mobile to do so. Vodafone's injunction was later overturned, and the iPhone is again available exclusively locked to T-Mobile.[35] While T-Mobile Germany told the court that they would unlock the iPhone after the contract, they were doing it voluntarily.
Italy has SIM locking laws requiring that carriers must specify the amount of subsidies, and allow subscribers to obtain unlocking codes after nine months by paying half of the listed subsidies. After 18 months, the SIM lock must be removed.[43]
According to OSIPTEL Peru's telecom regulator, article 23 of the Terms of use, mobile carriers can sell phones locked for a lower price for 12, 18 or 24-month contracts, but also must sell unlocked devices for the full price. The same article dictates the customer can request the unlock code for free after 12 months from the purchase date, no matter if the contract is still in place. The sole exception is if the customer cancels the contract before its end and pays the remaining cost, at which point the customer can request the device be unlocked at any time. OSIPTEL plans to reduce the time customers must wait to remove their SIM locks to 6 months. 2ff7e9595c
コメント