Call 196, select “Mobile services”, then select “Prepaid SimSim refill services” and follow instructions.
Or refill SimSim account through Batelco website e-services page; new users have to register to obtain a name and a password for security reasons.
Bills and e-Services
All major credit cards are accepted and all refill denominations are available online (BD1, BD 3, BD 5, BD 10 and BD 20).