With yallo, you have the option of signing up for a savings option. A savings option is a loyalty offer to you and allows you to surf and call at even more favorable rates. The savings options from yallo that include unlimited services are especially attractive. That way, you not only save money, you can also surf and call as much and as long as you want completely worry-free. You can activate a savings option via the self-service portal, by SMS, or on the order hotline 0800 00 48 48.