Need 4g LTE Router with following specs, please kindly recommend
1.Flash Memory:512 Mb
2.LTE Required Bands: Band 3 (1800 Mhz) FDD,Band 1 (2100 Mhz) FDD,Band 20 (800 Mhz) FDD,Band 41 (250 Mhz) TDD
3.Dual Sim CAT 6 (min) or CAT 9 or CAT 12 (Preferred)
Please recommend the device with above specs .