# Sparkfun LTE Cat-M1 and Hologram SIM

**URL:** <https://forum.core-electronics.com.au/t/sparkfun-lte-cat-m1-and-hologram-sim/5954>\
**Category:** Sparkfun\
**Created:** [25 July 2019 08:05 UTC](https://forum.core-electronics.com.au/t/sparkfun-lte-cat-m1-and-hologram-sim/5954 "2019-07-25T08:05:46Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![Robin57159](https://avatars.discourse-cdn.com/v4/letter/r/cc9497/32.png) [@Robin57159](https://forum.core-electronics.com.au/u/Robin57159)\
**Post date:** [26 July 2019 07:28 UTC](https://forum.core-electronics.com.au/t/sparkfun-lte-cat-m1-and-hologram-sim/5954/3 "2019-07-26T07:28:58Z")

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This thread may shed some light on the subject, especially in regards to to the SIM7000E.

> [@DFRobot SIM7000E Shield not attaching to network](https://forum.core-electronics.com.au/t/dfrobot-sim7000e-shield-not-attaching-to-network/5903):
>
> Hi, I purchased the SIM7000E shield for the Arduino UNO. I am using it on the Telstra network in Australia. I purchased it because it has GPS built-in. I am also using a separate power supply to ensure there is enough current for the unit. The red power LED comes on. The blue LED next to it flashes on boot up and the green LED near the antenna flashes about once per second. In GPRS mode the signal strength is always 0. In NB-IoT mode the strength varies between 0 and 20+. I both modes, I can…

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