mode. That means there are some limitations, to protect our services from potential abuse, and our new users from causing extensive issues. - product:signalwire_space ## What are the trial mode benefits? Trial mode allows new users to test SignalWire services with a $5.00 account credit. You can use this credit to purchase numbers, test calls, try video conferencing, and more. This credit is only available to first time users, so it will not be applied to new Spaces created by existing users. ## What are the trial mode limitations? There are a few classes of limitations we will list here for reference: **Activity limitations:** - Dial/receive calls from purchased/verified numbers within a given project - Send/receive messages from purchased numbers within a given project - SIP endpoints can register, but you cant place outbound calls or receive traffic on a Domain App **Resource count limitations:** - Maximum of 2 phone numbers - Only 10 queued calls at a time - Only 10 queued messages at a time - You can only hold 10 verified caller IDs at a time **Other limitations:** - No international calling or SMS - DIDs cannot be released for 30 days ## How do you exit trial mode? All you need to do is add a major credit card to your account and **add at least $5 of credit.** The $5.00 trial mode credit, promotions and codes do not count towards the total (i.e., if it says **balance credit**, that means it was credit applied by us and not money uploaded). ## Why was my credit card declined? We accept all major credit and debit cards through our processor. If your card is declined: - Check with your issuer that your credit card is active and valid. - Check that the billing address matches what is on file with your issuer. - If you are using a VPN or corporate firewall, try clearing your cache or connecting through a different network, then remove the card and add it again. ## Setting up Auto Top-Up For new accounts, [Auto Top-Up](/guides/how-to-set-auto-top-up-by-credit-card) will be enabled with a $10 minimum top-up amount when a credit card is added. If you plan to use your SignalWire account for production traffic, you should check your Top-up settings to ensure you do not run out of funds.