LINKZONE kilobyte downloads, megabyte uploads, why?

adiseker

    I just got an Alcatel LINKZONE to replace my ZTE, and I put the SIM from the ZTE into it.  I can connect to the LINKZONE, but when I do speedtests it shows download speeds in the kilobyte range, usually about 40-50 Kilobytes, but the upload speeds are in the Megabyte range, usually 7-8 Megabytes.  What can cause this?  Is it something related to the old SIM?  Do I need to use the SIM that came with the replacement, and if so, how is the account set up?  Normally I wouldn't mind having such high upload speeds, but only if I get high download speeds as well.

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