BTRC subscription figures describe categories reported by operators; they are not a count of people available to an advertiser. Keep the category, reporting period, source release, and any stated definition beside the number. Do not add mobile and fixed subscriptions into a unique-user estimate or turn nationwide subscriptions into a promise of serviceability. The campaign cell still needs its own location, device, connection, language, landing, and accepted-outcome evidence.
Test the lightest complete Bangladesh route on devices and connections that belong to the declared audience. Record first response, meaningful content, form or checkout behavior, validation messages, confirmation, and support. A page-load observation cannot prove the later transaction. When a step fails, preserve the device, browser, network state, destination version, and time so the team can distinguish page weight, connectivity, merchant logic, or an unsupported route.
Treat language as a handoff between the visitor and the operating team. Bengali, English, or another supported route must preserve the material offer through creative, landing copy, price, delivery, errors, payment, confirmation, refund, complaint, and support. Test the language the audience will actually encounter and the language the merchant can maintain. A translated headline does not repair a checkout or service channel that changes meaning later.
Bangladesh Bank material on mobile financial services supplies infrastructure and terminology context, not merchant acceptance. Rehearse the named method on the current checkout with permission. Capture provider, amount, currency, device, authentication, success, failure, durable receipt, reversal, refund, and support. Keep the advertising event provisional until the merchant record accepts the transaction; a national service count cannot establish that this customer and offer can complete it.
Separate supplier, connectivity, payment, destination, measurement, and offer outcomes before judging a Bangladesh source. Join supported campaign and click identifiers to one deduplicated accepted record, while retaining rejection, cancellation, refund, and later value. A source cell can be paused for lost identifiers without blaming the network, or for an unserviceable offer without changing a working payment method. Diagnosis precedes optimization.
Expansion follows the handoff that survived every check. Name the serviceable area, language, device route, verified offer, payment option, observation window, and loss boundary. Increase one budget, source, placement, creative, schedule, device, or geography setting while preserving a control. BTRC, Bangladesh Bank, consumer guidance, and platform controls frame questions; none predicts inventory, intent, completion, or return for the next marginal cell.
Bangladesh Bank is the central bank and an official payment-system reference for this bounded review. That description supplies context only; the current merchant route still needs its own test.
