Why Your Smartphone Is Becoming a Financial Device

Smartphones are increasingly becoming the primary tool for modern financial activities that used to require a bank branch to complete. Modern users rely on their smartphones for everything, from local transfers and cross-border remittances to savings, borrowing, mobile banking, investments, and stock trading, among others. 

It is, therefore, unsurprising that phones have been recognized as a primary driver of financial inclusion. For example, between 2021 and 2024, the World Bank Global Findex database showed a 16-percentage-point increase in formal savings among adults in LMICs, partly as a result of mobile money access. 

A deeper understanding of how hardware capabilities, push notifications, and dedicated financial apps power this shift can help users navigate modern finances safely.

The Hardware Doing the Heavy Lifting 

For financial services to be safely integrated into smartphones, various security elements had to be in place to ensure account security, chief among them being:

• Biometric sensors: Features like fingerprint scanners and facial recognition enable local verification for account logins, safeguarding users’ biometric data without transmitting it to the cloud, further limiting exposure to malicious attacks.
• Secure Enclave and Trusted Execution Environment chips: These are dedicated microprocessors in smartphones, which provide an extra layer of security by isolating sensitive user data from a smartphone’s main processor and protecting payment credentials against malicious attacks or malfunctions that may affect the main processor. 
• NFC for tap-to-pay: NFC enables short-range wireless communication between smartphones and payment terminals, which in turn allows users to complete transactions quickly and safely without physical card insertion or contact.

These hardware security features in smartphones help secure smartphone-originated financial transactions at every key step, from account access and in-app activities to transaction completion.

Why Push Notifications Matter More Than People Realize 

Push notifications, though often taken for granted, are one of the simplest yet great assets for users’ financial well-being and security.

When enabled, push notifications keep users informed about account activities and transaction status in real time. 

Users benefit from push notifications in the following ways:

• Reacting Fast to Suspicious Account Activities 

Since users get instant alerts for unauthorized access, payments, or charges on their accounts, they don’t have to wait until they receive their monthly statement to flag suspicious deductions on their account.

Many fintech apps also provide in-app features that users can access to immediately report, limit, or block unauthorized access or activities on their account.

• Better Financial Control and Wellbeing

Push notifications help users know the status of their transactions without having to open their app, visit a bank branch, or get a call from a vendor about a failed transaction, thus removing unnecessary hassles that could hamper the financial experience.

This means that for every payment, transfer, deposit, or withdrawal, the user can stay on top of their finances in real time. This can be especially helpful for users on a budget, who may use the instant notifications to know when they are approaching or going beyond their budget limits. 

From a broader perspective, official real-time notifications from apps also help users avoid the risk of falling for fake text messages and phishing emails. 

Case in Point: Sending Money Abroad from a Phone Alone 

Modern smartphones are financial devices, through and through. Users can utilize their smartphones to complete financial account setups and any financial transaction without visiting a physical branch or completing paperwork.

For instance, a user looking to send money to El Salvador for the first time. 

The journey starts with choosing a preferred remittance service provider operating in the US-El Salvador corridor, and then initiating and completing the transaction via the company’s website or app.

All the necessary steps can be completed on their smartphone and could be as follows:

• Register an account on the company’s website or app: Using their smartphone’s camera, the user can capture and upload all required documents for account registration. 
• Set up account security: Using available biometric sensors on their phone, such as Face ID or a fingerprint scanner, to set up login verification or transaction authorization. 
• Enable push notifications: Enabling push notifications allows the user to access real-time status tracking. Once the account has been funded and money sent to El Salvador, push notifications will provide real-time alerts on the status of the transfer. 

In doing so, the user completes an international money transfer from the comfort of their space via their phone, without having to visit a bank or complete any paperwork.

The ease and convenience of modern fintech services powered by smartphones also translate to nearly instant transfers, compared to traditional international transfers that could take days to get to the recipient. 

The Limits: Not Every Phone or Region Is Equal 

According to the World Bank, about 84% of adults in developing countries own a phone, about 25% of whom own a basic phone with no internet connectivity, and two-thirds own fully functional smartphones with access to the internet, apps, and browsers. 

Among those who own full-featured smartphones, factors that define who can or can’t fully use their smartphones as a financial device include the following:

• Technological obsolescence: Older devices may be unable to support modern software updates, and newer fintech apps may be backward incompatible. Users with such smartphones may be unable to fully use them as a financial device, except for mobile money services. 
• Smartphone category: Budget and mid-range smartphones, which dominate emerging markets, may lack high-end features, such as biometric sensors, secure enclave (or similar features, and NFC. This limits the security of financial transactions and may restrict the user from accessing fintech apps that require high device-level security integrations.
• Regions with weak connectivity: A user may have a full-featured smartphone but reside in a region with poor internet services, making it difficult to conveniently use their phone as a financial device. 

Furthermore, socio-economic factors like trust and digital financial literacy may pose a significant barrier to the use of smartphones as financial devices in rural communities. 

Where This Is Heading

The use of smartphones as financial devices will only get better in the future.

As smartphone technology advances with the integration of machine learning and artificial intelligence, next-gen smartphones are set to incorporate more sophisticated authentication systems, such as behavioral biometrics authentication. This will enable AI algorithms to detect and flag suspicious activities by analyzing keystroke patterns and unique user behaviors.

Innovations across device-level security architectures will make transactions more seamless and improve protection against complex threats, building more trust across user categories in different economies and regions. This will, in turn, facilitate broader use of smartphones as financial devices across the board.