Add-ons for 4G CHINA  DATA SIM, ONLY AVAILABLE for the following products:

1、

4G CHINA 7 DAYS DATA SIM - DIY PLAN

https://www.loyomobile.com/collections/china-data-only-sim-collection/products/4g-china-7-days-2gb-data-sim-3-in-1-sim-card-size

2、

4G CHINA 14 DAYS DATA SIM - DIY PLAN

https://www.loyomobile.com/collections/china-data-only-sim-collection/products/4g-lte-data-prepaid-sim

3、

4G CHINA 30 DAYS DATA SIM - DIY PLAN

https://www.loyomobile.com/collections/china-data-only-sim-collection/products/4g-china-30-days-10gb-data-sim