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Community Moderator Alumni are previous members of the Moderation Team, which ensures conversations are friendly, factual, and on-topic. Moderators are here to answer questions, escalate bugs, and make sure your voice is heard by the larger Fitbit team. Learn more
@Michellelynn Welcome to the Fitbit Community! I will recommend to try these syncing troubleshooting steps to fix this issue. I see the iPhone 5S is under the list of compatible devices.
Try that out and let me know how it goes! 
Best Answer
Community Moderator Alumni are previous members of the Moderation Team, which ensures conversations are friendly, factual, and on-topic. Moderators are here to answer questions, escalate bugs, and make sure your voice is heard by the larger Fitbit team. Learn more
@Michellelynn Welcome to the Fitbit Community! I will recommend to try these syncing troubleshooting steps to fix this issue. I see the iPhone 5S is under the list of compatible devices.
Try that out and let me know how it goes!
Best Answer