One of the latest Optus 4G wifi modem (Another one is Huawei E5577: https://www.ozbargain.com.au/node/428982)
This is the most frequency support device on market if unlocked, not only support 4G 700MHz, but also Vodafone 4G 850Mhz and Telstra 3G 850MHz
Unlock code from eBay seller: $8.00
* Cat4 150Mbps download
* 15 devices support
* Come with 14GB data before 04/02/2019 and 4GB data after it.
* 4G LTE: B1/B3/B5/B7/B8/B28 700/900/850/1800/2100/2600MHz
* 3G: B1/B3/B5/B8 850/900/1800/2100MHz
* 2.4GHz wifi
Cons: No external antenna port
Compare to the other deal Huawei E5577:
They are very similar in hardware feature, but
* This Alcatel modem has unlock solution
* This ALcatel support 3G 850MHz and 4G 850MHz, which Huawei E5577 not support. So this one should work better than Huawei E5577 with Telstra and Vodafone sim if unlocked.
* This Alcatel comes with a wall charger.