App activation and phone changes are KCB Care’s most common questions.
Based on questions people sent to KCB’s official X account (@KCBCare) and KCB’s own replies, checked on 14 October 2026. Questions are paraphrased. Where KCB has not confirmed something publicly, we say so.
Activating the app
KCB says first-time activation needs mobile data from the registered line; the code is captured automatically (KCB on X, 15 Jul 2026).
New phone
After changing device, visit a KCB branch for mobile banking activation – a security measure, per KCB (KCB on X, 30 Jun 2026).
Change phone number
Visit a branch with your original ID and a 3-month M-PESA statement for the new number (KCB on X, 3 Aug 2026).
Cards and dormant accounts
A replacement debit card is a new card at KES 516 (KCB on X, 31 Jul 2026); apply at a branch with your original ID (KCB on X, 29 Jul 2026). Account activation: visit a branch with original ID, KRA PIN and KES 250 (KCB on X, 27 Sep 2026).
Fake callers
KCB asks customers to report suspicious numbers to 333 (KCB on X, 9 Oct 2026).
Frequently asked questions
How do I activate the KCB app on a new phone?
Visit a KCB branch, per KCB.
How much is a KCB debit card replacement?
KES 516, per KCB Care.
Related: KCB help hub
Sources
- KCB Care on X – new device (checked 14 October 2026)
- KCB Care on X – card (checked 14 October 2026)
