Karnataka Bank Limited has recently launched a Missed Call Banking Facility. Which combination of statements about this facility is correct?

Introduction / Context:
Banks now provide convenient facilities such as missed call banking to help customers get essential account information without visiting branches or using internet banking. Karnataka Bank Limited introduced a Missed Call Banking Facility with several specific features and conditions. This question tests a candidate's ability to carefully read and evaluate multiple statements about the facility, which is a common pattern in banking awareness and general knowledge exams.

Given Data / Assumptions:

• Statement 1: After giving a missed call, the customer receives account balance or mini statement via SMS on the mobile phone.
• Statement 2: This facility is free of cost.
• Statement 3: Customers can give a missed call from their registered mobile number to designated bank numbers to know balance or get a mini statement.
• Statement 4: These services are available only from registered mobile numbers to ensure confidentiality.
• The task is to select which combination of these statements is correct.

Concept / Approach:
Missed call banking services are designed to be simple, secure, and free. They typically rely on the customer's mobile number registered with the bank to prevent misuse. On receiving the missed call, the bank system automatically sends an SMS with the requested information. By examining each of the given statements against this typical model, we can identify whether each one is logically consistent with such a facility.

Step-by-Step Solution:
Step 1: Evaluate Statement 1. In almost all missed call facilities, the customer receives a balance or mini statement through SMS after giving a missed call, so Statement 1 is correct. Step 2: Evaluate Statement 2. Banks usually offer missed call banking free of cost because only normal call or SMS charges of the telecom operator may apply, so Statement 2 is also correct. Step 3: Evaluate Statement 3. The process requires customers to dial a specific designated number from the registered mobile so that the system can map the call to the correct account, therefore Statement 3 is correct. Step 4: Evaluate Statement 4. To keep account information confidential, banks restrict these services to registered mobile numbers only. This makes Statement 4 correct as well. Step 5: Since all four statements are correct, the combination that includes all of them is the right answer.

Verification / Alternative check:
A quick verification approach is to compare the statements with the features listed on Karnataka Bank's official communication about its Missed Call Banking Facility or with similar services of other banks. These services are almost always free, rely on registered mobile numbers, and reply via SMS with account details. This cross check confirms that all four statements match typical practice.

Why Other Options Are Wrong:
1, 3 and 4: This combination wrongly omits Statement 2 even though the facility is indeed free of cost.
1, 2 and 3: This option ignores information security, but banks do restrict such services to registered numbers, so leaving out Statement 4 is incorrect.
1, 2 and 4: This ignores the fact that designated numbers are used to trigger specific functions, so excluding Statement 3 is wrong.

Common Pitfalls:
A common mistake is to overthink and assume that something must be incorrect just because many statements are given. Candidates may wrongly distrust the idea that a facility can be free or misinterpret the security measures. Another pitfall is reading the question too fast and missing the phrase "registered mobile number", which is a crucial detail in Statements 3 and 4.

Final Answer:
All four statements correctly describe features of Karnataka Bank's Missed Call Banking Facility, so the correct choice is 1, 2, 3 and 4.