为什么克隆TEMS手机没有原版手机信号好？

[yy19820503]

主要还是看知道那个算法，要不也没什么用

[abdussamih]

TEMS手机软件的版权保护机制：
TEMS测试手机和普通的爱立信手机在硬件上是一摸一样的；不同就是手机的软件，所以才有可能把普通的手机通过刷软件改成TEMS手机；不过世面大部分是克隆的TEMS手机，而不是和原版手机一模一样的，表面上的区别是IMEI是克隆的，其他最根本的区别是一个rf calibration data的参数也是克隆的，而不是手机本身的那个。

这个参数的不同导致了克隆的手机达不到普通手机的效果，因为不同手机的OUTPUTPOWER参数是不一样的，如果都用同样的rf calibration data参数的话，手机的效果就会有差异。
那么为什么不用手机原来的rf calibration data参数呢？
那是因为还有个CHECKSUM的计算，TEMS checksum 8字节，它是根据IMEI,rf calibration data和TEMS FLAG来计算的：
IMEI的长度是9字节；
rf calibration data是32字节；
TEMS flags 是60字节；
TEMS checksum 是8字节；

不知道如何计算这个TEMS CHECKSUM导致只能把上面四个参数克隆下来写到新手机里，这样虽然可以用，但是效果就会有点差别，运气好的话，那个rf calibration data参数刚好和你的手机差不多的话，手机的效果还可以；如果差别很大的，手机的效果就很差了，这也是那些克隆手机制作者热衷于交换手机FLASH的一个原因吧！

TEMS mobile software copyright protection mechanisms:
TEMS and the general test of E******* mobile phone handset on the hardware are the same copy; mobile phone software is different, so will it be possible to put an ordinary mobile phone software through the brush into a TEMS mobile; various aspects of society but most of the TEMS mobile phone cloning , rather than exactly the same and the original mobile phone, is the difference between the surface IMEI cloning are other differences between the most fundamental is a parameter of the rf calibration data is cloned, rather than the mobile phone itself.

This parameter has led to the cloning of different mobile phone handset of the effect of less than ordinary, because different parameters OUTPUTPOWER the cell phone is not the same as, if using the same parameters of the rf calibration data, then the effect of mobile phone will have differences.
So why do not the original cell phone rf calibration data parameters it?
That is because the calculation also CHECKSUM month, TEMS checksum 8 bytes, which is the IMEI, rf calibration data and to calculate the TEMS FLAG:
IMEI is the length of 9 bytes;
rf calibration data are 32 bytes;
TEMS flags are 60 bytes;
TEMS checksum is 8 bytes;

Do not know how to calculate the cause TEMS CHECKSUM above four parameters can only write down the new cell phone cloning, the way can be used, but the effect would be little difference between the best of luck, the rf calibration data parameters that is just and your mobile phone almost , then the effect of mobile phone can also be; if a lot of difference, the effect of mobile phone on the poor, and this is also the producers of those cloned cell phone handset FLASH keen to exchange one of the reasons for it!

[deadfish]

看来能解密出算法的人也挺厉害的....

[deadfish]

现在都给手机上的那些什么固件什么的搞糊涂了...分不清南北了...

[manabhanjanm]

can any one help me..in drive test......

[manabhanjanm]

does anyone have..study material regarding drive test...

[manabhanjanm]

plz post something regarding drive test

[manabhanjanm]

and finally 10....................

[gyb820703]

我用laser 提供的刷机包 和div8.4刷机工具 刷出了中文版本 tems t618 。很好用连接tems 8.0.3 可以正常使用！

[book_tmp]

原来如此呀？现在知道TEMS也能克隆。